From 91a47fb42c2fae7e99024c140217f98310b09dfd Mon Sep 17 00:00:00 2001 From: Karti Tripathi Date: Mon, 3 Aug 2026 16:22:21 -0700 Subject: [PATCH] Lumbridge Compute MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Governed compute for unified-memory AI hardware — the machines where CPU and GPU share one pool and there is no separate VRAM allocation to bounce off. Over-commit that pool and the box thrashes and wedges, SSH and ping included, before the OOM killer gets a turn. Compute does not run inference. It supervises the servers that do: - Admission control. A model starts only if committed + requested + margin fits the budget. The refusal is the feature. - A 1 Hz watchdog on MemAvailable that stops the newest model before thrash. - Scenes: named sets of models activated as one transactional unit, with pre-flight validation and rollback to the previously active Scene on failure. Scenes reference model ids, never weight paths or commands, so a Scene obtained from elsewhere cannot introduce code. - Process ownership bound to (boot_id, pid, start_time_ticks, pgid == pid), so a reused PID can never be group-killed. - A protocol-transparent TCP gateway, so clients keep one address while model runtimes move behind it. - An MCP server, so agents drive the node as tools rather than as a CLI. One binary, six direct dependencies, no async runtime outside the MCP surface. Published from the internal monorepo with a fresh history. The private development tree keeps its own history; nothing here carries it. --- .github/workflows/ci.yml | 18 + .gitignore | 20 + CONTRIBUTING.md | 20 + Cargo.lock | 935 ++++++++++++++++++++++++ Cargo.toml | 41 ++ LICENSE | 21 + README.md | 123 ++++ SECURITY.md | 22 + docs/evals.md | 37 + docs/operations.md | 141 ++++ docs/positioning.md | 51 ++ docs/roadmap.md | 29 + docs/scene-spec.md | 178 +++++ evals/finance-core.eval.yaml | 47 ++ evals/performance.eval.yaml | 21 + evals/smoke.eval.yaml | 33 + evals/voice-agent.eval.yaml | 39 + examples/demo/registry/models.yaml | 34 + examples/demo/scenes/one.scene.yaml | 12 + examples/demo/scenes/two.scene.yaml | 12 + registry/models.yaml | 179 +++++ scenes/darkroom.scene.yaml | 27 + scenes/music.scene.yaml | 20 + scenes/studio.scene.yaml | 22 + scenes/voice-gemma.scene.yaml | 22 + scenes/voice-laguna.scene.yaml | 21 + scenes/voice-qwen.scene.yaml | 18 + src/agent.rs | 67 ++ src/config.rs | 151 ++++ src/eval.rs | 495 +++++++++++++ src/gateway.rs | 102 +++ src/governor.rs | 104 +++ src/lifecycle.rs | 601 +++++++++++++++ src/main.rs | 388 ++++++++++ src/mcp.rs | 609 +++++++++++++++ src/mem.rs | 37 + src/proc.rs | 363 +++++++++ systemd/lumbridge-compute-agent.service | 26 + 38 files changed, 5086 insertions(+) create mode 100644 .github/workflows/ci.yml create mode 100644 .gitignore create mode 100644 CONTRIBUTING.md create mode 100644 Cargo.lock create mode 100644 Cargo.toml create mode 100644 LICENSE create mode 100644 README.md create mode 100644 SECURITY.md create mode 100644 docs/evals.md create mode 100644 docs/operations.md create mode 100644 docs/positioning.md create mode 100644 docs/roadmap.md create mode 100644 docs/scene-spec.md create mode 100644 evals/finance-core.eval.yaml create mode 100644 evals/performance.eval.yaml create mode 100644 evals/smoke.eval.yaml create mode 100644 evals/voice-agent.eval.yaml create mode 100644 examples/demo/registry/models.yaml create mode 100644 examples/demo/scenes/one.scene.yaml create mode 100644 examples/demo/scenes/two.scene.yaml create mode 100644 registry/models.yaml create mode 100644 scenes/darkroom.scene.yaml create mode 100644 scenes/music.scene.yaml create mode 100644 scenes/studio.scene.yaml create mode 100644 scenes/voice-gemma.scene.yaml create mode 100644 scenes/voice-laguna.scene.yaml create mode 100644 scenes/voice-qwen.scene.yaml create mode 100644 src/agent.rs create mode 100644 src/config.rs create mode 100644 src/eval.rs create mode 100644 src/gateway.rs create mode 100644 src/governor.rs create mode 100644 src/lifecycle.rs create mode 100644 src/main.rs create mode 100644 src/mcp.rs create mode 100644 src/mem.rs create mode 100644 src/proc.rs create mode 100644 systemd/lumbridge-compute-agent.service diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml new file mode 100644 index 0000000..9ddf67e --- /dev/null +++ b/.github/workflows/ci.yml @@ -0,0 +1,18 @@ +name: ci + +on: + push: + pull_request: + +jobs: + rust: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v4 + - uses: dtolnay/rust-toolchain@stable + with: + components: rustfmt, clippy + - run: cargo fmt --check + - run: cargo clippy --all-targets + - run: cargo test + - run: cargo build --release diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..52c7b3f --- /dev/null +++ b/.gitignore @@ -0,0 +1,20 @@ +/target +.kuda/ +eval-results/ +**/*.rs.bk +Cargo.lock.orig +*.log +.DS_Store + +# Secrets. docs/operations.md walks operators through generating keys, so these +# have to be unstageable by default rather than by discipline. +.env +.env.* +*.pem +*.key +*_rsa +*_ed25519 +id_ed25519* +.ssh/ +*secret* +*credentials* diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md new file mode 100644 index 0000000..500e572 --- /dev/null +++ b/CONTRIBUTING.md @@ -0,0 +1,20 @@ +# Contributing to Lumbridge Compute + +Contributions are welcome. Changes land as small, reviewable commits. + +## Development + +```bash +cargo test +cargo fmt --check +cargo clippy --all-targets +cargo build --release +``` + +Changes to the `lumbridge/v1` scene or eval contracts require fixtures, backward- +compatibility notes, and documentation. Never add secrets, private model tokens, +personal voice samples, internal hostnames, or arbitrary commands to shareable +scene/eval manifests. + +Performance changes should include before/after JSON artifacts and the complete +hardware/model/runtime configuration needed to reproduce them. diff --git a/Cargo.lock b/Cargo.lock new file mode 100644 index 0000000..ad72070 --- /dev/null +++ b/Cargo.lock @@ -0,0 +1,935 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +version = 4 + +[[package]] +name = "android_system_properties" +version = "0.1.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311" +dependencies = [ + "libc", +] + +[[package]] +name = "anstream" +version = "1.0.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "824a212faf96e9acacdbd09febd34438f8f711fb84e09a8916013cd7815ca28d" +dependencies = [ + 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+keywords = ["dgx-spark", "gb10", "llm", "orchestration", "unified-memory"] +categories = ["command-line-utilities"] +version = "0.1.0" +edition = "2021" +license = "Apache-2.0" +authors = ["Karti Tripathi"] +repository = "https://git.karti.ai/lumbridge-public/compute" +# Raised from 1.78 by the MCP server: `rmcp` is edition 2024 and declares 1.88. +# Nothing else here needs it, so this is the floor to drop back down to if the +# MCP surface is ever removed. +rust-version = "1.88" + +[[bin]] +name = "lumbridge-compute" +path = "src/main.rs" + +[dependencies] +anyhow = "1" +clap = { version = "4", features = ["derive"] } +serde = { version = "1", features = ["derive"] } +serde_json = "1" +serde_yaml = "0.9" +libc = "0.2" +# MCP server surface. `rmcp` is Apache-2.0, matching this crate's own licence, +# and only the server half is compiled in — Compute never acts as an MCP client. +# `fs` is on tokio because the stdio transport is handed a dup'd descriptor +# rather than fd 1 itself; see src/mcp.rs. +rmcp = { version = "3", features = ["server", "transport-io", "macros"] } +schemars = "1" +tokio = { version = "1", features = ["rt", "io-std", "fs", "time"] } + +# Keeps `lumbridge-compute` a single stripped static binary. Lived at the +# workspace root before this crate was split out; Cargo ignores [profile] in +# workspace members, so it has to be here now. +[profile.release] +strip = true +lto = true diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..92b7af9 --- /dev/null +++ b/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2026 Karti Tripathi + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/README.md b/README.md new file mode 100644 index 0000000..cd46d69 --- /dev/null +++ b/README.md @@ -0,0 +1,123 @@ +
+ +# Lumbridge Compute + +**The AI compute layer for Lumbridge clusters. Safe models, scenes, and evals on your own hardware.** + +*Run many models on one box — safely — on NVIDIA DGX Spark (GB10), DGX Station (GB300), and RTX.* + +
+ +--- + +Lumbridge Compute is the tool you install the minute you open your DGX Spark. Boxes like the +DGX Spark (GB10), DGX Station (GB300), and RTX workstations share **one memory pool** +between CPU and GPU with little swap. On that hardware, over-committing memory doesn't +fail gracefully — the whole machine thrashes and wedges (SSH and ping included) before +the OOM killer acts. Lumbridge Compute makes that impossible, and turns the box into something you +can load with different workloads on a schedule. + +> **exo runs one model across many boxes. Lumbridge Compute runs many models on one box — safely.** +> They're orthogonal; you can run Lumbridge Compute on each node of an exo cluster. + +## Three layers + +| Layer | Analogous to | Job | +|---|---|---| +| **Governor** | kernel / memory cgroup + OOM policy | Nothing starts unless it fits a hard budget; a watchdog kills the newest model *before* the box wedges. | +| **Scenes** | systemd targets | Named, shareable, activatable bundles of models (`studio`, `darkroom`). | +| **lumbridge-compute** (the shell) | the CLI you install | Onboard a fresh box, manage models, activate/schedule scenes. | + +## The Governor (why Lumbridge Compute exists) + +Unified memory means no separate VRAM pool to bounce off. vLLM, diffusers, and friends +will happily reserve past 100% of the shared pool, and the box wedges. The Governor +prevents this with two mechanisms: + +1. **Admission control** — a model starts only if its declared footprint fits the budget + given what's already running, plus a safety margin. +2. **Watchdog** — a 1 Hz thread on `MemAvailable`; if it dips below a critical floor, it + kills the most-recently-started model before thrash. A backstop for a wrong estimate. + +## Scenes + +A **scene** is a named set of models brought up together — the unit you activate, publish, +and schedule. A single unified-memory box can't hold every model at once, so scenes let +you **time-multiplex** it: run a live voice assistant by day, then switch to an overnight +image farm at 3am. One box, the utilization of several. + +Scenes reference **model ids**, never weight paths — so requantizing or upgrading a model +never breaks a published scene. See [`docs/scene-spec.md`](docs/scene-spec.md), and +[`docs/positioning.md`](docs/positioning.md) for how Lumbridge Compute relates to Ollama / llama-swap / exo. + +## Evals + +Lumbridge Compute ships a native, model-server-agnostic evaluation runner. Versioned YAML suites +measure streamed TTFT, client-observed prefill throughput, decode throughput, and +deterministic capability assertions against any OpenAI-compatible endpoint. + +```bash +lumbridge-compute eval ls +lumbridge-compute eval run smoke +lumbridge-compute eval run performance --repeat 5 +lumbridge-compute eval run finance-core +``` + +Every run writes a portable JSON artifact for regression tracking and future eval +registries. See [`docs/evals.md`](docs/evals.md). + +## Install + +```bash +# from source (single static binary, no runtime deps) +cargo install --path . +``` + +## Usage + +```bash +lumbridge-compute status # Governor: memory, budget, running set, headroom +lumbridge-compute model ls # registry: footprints + live state + which port +lumbridge-compute scene ls # scenes with total footprint +lumbridge-compute scene show darkroom # models + footprints + admission verdict +lumbridge-compute scene adopt voice-qwen # one-time identity capture for a legacy live node +lumbridge-compute scene resume # desired Scene, then last-known-good fallback +lumbridge-compute gateway # stable streaming endpoint -> local model server +lumbridge-compute agent # resident resume + gateway + memory supervisor + +# planned: +lumbridge-compute model pull # footprint-aware; warns if no scene can hold it +lumbridge-compute scene schedule darkroom 03:00 04:00 # time-multiplex the box +``` + +By default Lumbridge Compute reads `registry/` and `scenes/` from the current directory (override with +`--root `, `$LUMBRIDGE_COMPUTE_ROOT`, or the compatibility variable `$KUDA_ROOT`). + +## Status + +The Governor, identity-bound process ownership, transactional Scene switching, +persistent desired state, last-known-good recovery, resident agent, streaming gateway, +eval runner, and watchdog work today. Next: the model artifact manager (`pull`), fleet API, +and scheduler. See [node operations](docs/operations.md) and the stable +[scene spec](docs/scene-spec.md). + +## Compatibility + +Lumbridge Compute grew out of an earlier prototype named Kuda. The rename is complete: the +executable is `lumbridge-compute`, manifests declare `apiVersion: lumbridge/v1`, and the root +is `$LUMBRIDGE_COMPUTE_ROOT`. + +Two compatibility surfaces are kept deliberately, so a node that predates the rename keeps +running without a flag day: + +- `$KUDA_ROOT` is still read if `$LUMBRIDGE_COMPUTE_ROOT` is unset. +- `.kuda/` remains the on-disk state directory name, and `apiVersion: kuda/v1` is still + accepted on eval suites. + +Both are inert aliases — nothing new should use them. + +Lumbridge Compute runs on NVIDIA hardware but is independent and is not affiliated with or endorsed by NVIDIA. + +## License + +MIT — see [LICENSE](LICENSE). diff --git a/SECURITY.md b/SECURITY.md new file mode 100644 index 0000000..25cec86 --- /dev/null +++ b/SECURITY.md @@ -0,0 +1,22 @@ +# Security policy + +Report vulnerabilities privately to **security@karti.ai** before opening a +public issue. Expect an acknowledgement within a few days. + +## Scope you should assume + +Compute is a node-local supervisor, and two properties are deliberate rather +than oversights — know them before you deploy it: + +- **The gateway has no authentication and no TLS.** The shipped systemd unit + binds `127.0.0.1`. Anything that widens that bind publishes every model on the + node; put a reverse proxy or an overlay network in front instead. +- **The model registry is trusted local configuration.** Launch commands live + only in the registry, never in a Scene, so a Scene obtained from elsewhere + cannot introduce code. Treat the registry itself as you would a systemd unit. + +Lumbridge Compute treats model registries as trusted local configuration and scenes/eval suites +as potentially untrusted shared data. Shared manifests reference vetted ids and +must never execute embedded shell commands. Downloads must be checksum-verified +before promotion into the trusted registry. Secrets belong in environment or +OS-managed secret stores, never manifests, logs, or result artifacts. diff --git a/docs/evals.md b/docs/evals.md new file mode 100644 index 0000000..af270a0 --- /dev/null +++ b/docs/evals.md @@ -0,0 +1,37 @@ +# Lumbridge Compute evaluations (`lumbridge/v1`) + +Lumbridge Compute evaluates the model configuration that is actually serving: weights, +quantization, context, runtime, parsers, and speculative decoder. A model name +without its serving configuration is not a reproducible benchmark target. + +```bash +lumbridge-compute eval ls +lumbridge-compute eval run smoke +lumbridge-compute eval run performance --model brain --repeat 5 +lumbridge-compute eval run finance-core --base-url http://your-node:8001/v1 +``` + +Suites live in `evals/*.eval.yaml`. Each case has a stable id, prompt, category, +generation limit, and deterministic assertions. Runs produce append-only JSON in +`eval-results/` with raw outputs and per-sample metrics. + +## Metrics + +- **TTFT**: wall time until the first streamed content or reasoning token. +- **Prefill tok/s (approximate)**: API-reported prompt tokens divided by TTFT. + This is client-observed and includes queueing/scheduling; server-native prefill + metrics should be added as a separate source rather than conflated with it. +- **Decode tok/s**: completion tokens divided by time after the first token. +- **Score**: share of samples satisfying every declared assertion. + +Performance runs should include warmups in automation and record hardware, Lumbridge Compute +scene, runtime version, model revision, and cold/warm cache state. The v1 artifact +is deliberately local and portable; a future registry can ingest the same JSON. + +## Eval-to-training bridge + +Capability suites should graduate into environment packages containing a dataset, +harness, and reward function. That common contract can be adapted to Prime +Intellect `verifiers` for evaluation, synthetic-data generation, SFT, or RL with +`prime-rl`. Lumbridge Compute owns scene scheduling, memory admission, checkpoints, and process +lifecycle; the training framework owns optimization and distributed execution. diff --git a/docs/operations.md b/docs/operations.md new file mode 100644 index 0000000..964a8b1 --- /dev/null +++ b/docs/operations.md @@ -0,0 +1,141 @@ +# Lumbridge Compute node operations + +## Persistent Scene state + +Compute stores compatibility state at `/.kuda/state.yaml`. State writes use +an atomic temporary-file replacement. The persisted lifecycle fields are: + +- `desired_scene`: the Scene the node should resume after an agent or node restart; +- `active_scene`: the Scene whose exact model health was last verified; +- `last_known_good_scene`: the previous proven Scene used for recovery; +- `transition_scene`: an in-progress transaction, cleared on success or failure; +- `last_error`: the most recent activation or watchdog failure. + +Process ownership is bound to `(boot_id, pid, process_start_ticks)`. Compute will +never signal a legacy PID-only record or a PID that Linux has reused. + +## One-time adoption on an existing node + +Before the first transactional switch, bind the already-running exact Scene to +process identities. Adoption neither starts nor stops a model. + +```bash +lumbridge-compute --root $LUMBRIDGE_COMPUTE_ROOT scene adopt voice-qwen +lumbridge-compute --root $LUMBRIDGE_COMPUTE_ROOT status +lumbridge-compute --root $LUMBRIDGE_COMPUTE_ROOT scene activate voice-qwen --dry-run +``` + +Adoption fails if a Scene model is unhealthy, its health marker identifies the +wrong model, another registered model is serving, a legacy process record is +missing, or its process group does not equal its PID. + +## Transactional switching and recovery + +```bash +lumbridge-compute scene activate voice-laguna --dry-run +lumbridge-compute scene activate voice-laguna +lumbridge-compute scene resume +``` + +Activation validates the complete Scene and all process ownership before any +stop. A shared port occupied by the wrong model is a hard failure. Every started +model must report its exact health marker. If a transition fails after mutation, +Compute stops the partial target and restores the previously active Scene. + +`scene resume` tries the persisted desired Scene. If it cannot become exactly +healthy, it tries the previous last-known-good Scene. + +## Resident agent and stable gateway + +The resident agent resumes desired state once, serves a transparent TCP gateway, +and enforces the unified-memory floor: + +```bash +lumbridge-compute agent --listen 0.0.0.0:8011 --upstream 127.0.0.1:8001 --floor 3 +``` + +The gateway is deliberately protocol-transparent, preserving OpenAI-compatible +HTTP streaming and SSE. Apps use `http://:8011`; model runtimes may +continue to move behind the local upstream port. + +## Installing the agent + +Install the unit only after adoption and a no-op resume test on that node. The resident +agent is the only unit — it subsumes the earlier default-Scene oneshot and the standalone +watchdog, both retired. + +```bash +sudo install -m 0644 systemd/lumbridge-compute-agent.service \ + /etc/systemd/system/lumbridge-compute-agent.service +sudo systemctl daemon-reload +sudo systemctl enable --now lumbridge-compute-agent.service +``` + +The unit sets `LUMBRIDGE_COMPUTE_ROOT` and the agent takes its root from there, so the +node's root path is declared in exactly one place. + +Verify exact model identity through both the backend and the gateway before pointing any +consumer at the node: + +```bash +curl -fsS http://127.0.0.1:8001/v1/models +curl -fsS http://127.0.0.1:8011/v1/models +systemctl is-active lumbridge-compute-agent.service +``` + +## Node repository access + +A node pulls with a **read-only deploy key**, not an account token. Each node gets its own +keypair generated *on that node* (the private half never transits the network), and only the +public half is registered against this one repository. A compromised node can therefore read +this repo and nothing else — it cannot push, cannot reach other repos, and cannot use the +gitea API. Revoke a single node by deleting its deploy key. + +Setting one up: + +```bash +# on the node — private key stays here +ssh-keygen -t ed25519 -f ~/.ssh/gitea_lumbridge_compute -N "" -C " deploy key (read-only)" +``` + +Register the public half as a **read-only** deploy key on `karti/lumbridge-compute`, then point +the node's remote at it via an `~/.ssh/config` host alias (gitea SSH listens on **2223**): + +``` +Host gitea-lumbridge + HostName + Port 2223 + User git + IdentityFile ~/.ssh/gitea_lumbridge_compute + IdentitiesOnly yes +``` + +```bash +git remote set-url origin gitea-lumbridge:karti/lumbridge-compute.git +git branch --set-upstream-to=origin/main main +``` + +Verify it is genuinely read-only before trusting it — a push must be rejected: + +```bash +git fetch origin # succeeds +git push origin HEAD:refs/heads/write-test # must fail +``` + +## Upgrading the agent binary + +`KillMode=process` means model process groups outlive an agent restart, and the agent +revalidates every `(boot_id, pid, start_time_ticks)` identity on resume. A binary upgrade +therefore does not disturb a healthy Scene: + +```bash +git pull && cargo build --release +sudo systemctl restart lumbridge-compute-agent.service +``` + +Confirm the model PIDs are unchanged afterwards. If the agent cannot revalidate an identity +it refuses to signal that process rather than guessing — investigate before forcing anything. +To roll back, check out the previous commit, rebuild, and restart the same unit; the model +processes are untouched either way. + +Do not reboot solely to test an upgrade. Prove resume and gateway parity in the live boot first. diff --git a/docs/positioning.md b/docs/positioning.md new file mode 100644 index 0000000..8f347b0 --- /dev/null +++ b/docs/positioning.md @@ -0,0 +1,51 @@ +# Positioning + +Where Lumbridge Compute sits relative to the tools people already know. The short version: the +neighbors solve *different* problems, and the closest one has exactly the gap Lumbridge Compute fills. + +## The landscape + +| Tool | Axis | What it does | Gap for a unified-memory box | +|---|---|---|---| +| **exo** | scale **out** | Shards *one* big model *across* many boxes (Thunderbolt/RDMA, MLX, Apple-first) | Doesn't run many models on one box; not GB10/GB300-native | +| **Ollama** | single model | Dead-simple pull/run one LLM, huge library | No multi-service orchestration, **no memory governor** | +| **llama-swap** | swap **in/out** | On-demand load/unload, TTL idle-unload, co-run matrix, any OpenAI server | **"No memory budgeting or OOM prevention"** (their words), LLM-swapping not capability-stacks, no scheduling/sharing | +| **LiteLLM** | routing | One OpenAI endpoint in front of many backends | A proxy — doesn't manage lifecycle or memory | + +## The one-liner + +> **exo runs one model across many boxes. Lumbridge Compute runs many models on one box — safely.** + +Orthogonal, not competing — you can run Lumbridge Compute on each node of an exo cluster. + +## Where Lumbridge Compute is unique + +1. **The Governor.** No one else does unified-memory admission control + an OOM-wedge + watchdog. It's the pain *specific* to Grace-Blackwell shared memory, where over-commit + wedges the whole box instead of failing a single allocation. This is the moat. +2. **Scenes are capability stacks, not model swaps.** llama-swap picks *which LLM* answers. + Scenes compose *heterogeneous services together* — ASR + LLM + TTS + image + music — as + one activatable unit. +3. **Scheduled scenes** — time-multiplex a box by hour (live assistant by day, image farm + overnight). Nobody does this. +4. **Shareable scene registry** — publish and pull scenes. The community flywheel. +5. **GB10 / GB300 / RTX-native** — NVFP4, `flashinfer` MoE backend, `sm_121a`. exo is + Apple-first; Lumbridge Compute is Grace-Blackwell-first. + +## Ideas worth borrowing (don't reinvent) + +- **From llama-swap:** TTL idle-unload; an OpenAI-compatible gateway in front so apps hit + one stable endpoint regardless of which scene is live; a web UI; Prometheus metrics; + install via brew/binary/docker. +- **From Ollama:** one-command onboarding and a friendly `model pull/ls/rm` UX + a library. +- **From LiteLLM:** the router-in-front pattern — pairs with scenes (the `served_name` + aliases already point this way). +- **From exo:** OpenAI + Anthropic + Ollama-compatible APIs; later, auto-discovery so Lumbridge Compute + can coordinate scenes across two Sparks. + +## The model manager angle + +Lumbridge Compute's `model` commands aren't just another Ollama. They're **governor-aware and +scene-aware**: Lumbridge Compute knows each model's footprint, warns *before* you pull something no +scene could ever hold, and shows which scenes a model belongs to. Ollama manages files; +Lumbridge Compute manages *what can actually run together*. diff --git a/docs/roadmap.md b/docs/roadmap.md new file mode 100644 index 0000000..1cff4a0 --- /dev/null +++ b/docs/roadmap.md @@ -0,0 +1,29 @@ +# Lumbridge Compute roadmap + +Lumbridge Compute is the resident AI workload control plane for unified-memory machines. + +## Core contracts + +1. **Models** — local vetted launch recipes with immutable revisions and measured footprints. +2. **Scenes** — named workload sets activated through admission control. +3. **Evals** — versioned datasets, prompts, harnesses, assertions, and portable results. +4. **Artifacts** — resumable weights, adapters, checkpoints, datasets, and result bundles. +5. **Jobs** — inference, evaluation, download, conversion, SFT, and RL lifecycles. + +## Near term + +- Resumable, checksum-verified `lumbridge-compute model pull` with leases and progress state. +- Eval comparison, regression thresholds, warmup policy, concurrency/load tests, + server-native Prometheus metrics, and hardware/config provenance. +- Scene hooks for preflight, post-activation eval gates, rollback, and schedules. +- Gateway aliases so clients follow the active scene without configuration changes. +- Training scenes and a Prime Intellect adapter for Qwen 0.6B/1.7B experiments. +- Checkpoint discovery, pause/resume, retention, and promotion into the model registry. + +## Open-source readiness + +- Keep public scene/eval manifests command-free; commands remain in the trusted local registry. +- Add CI across x86_64 and aarch64, unit/integration tests, security policy, + contribution guide, code of conduct, changelog, and versioned JSON schemas. +- Remove private hostnames, voices, paths, and finance datasets from public fixtures; + ship generic examples and keep personal overlays outside the repository. diff --git a/docs/scene-spec.md b/docs/scene-spec.md new file mode 100644 index 0000000..e95c0ad --- /dev/null +++ b/docs/scene-spec.md @@ -0,0 +1,178 @@ +# Lumbridge Compute Scene Spec (`lumbridge/v1`) + +This is the public contract. Everything else — the Governor, the CLI, the +scheduler — can be refactored freely. This format cannot, once people publish +scenes against it. So it is deliberately small. + +## The core idea: scenes reference ids, not weights + +A **scene** is a manifest listing **model ids**. A **model registry** resolves each +id to actual weights + a launch command. The registry churns as models evolve (new +quants, new backends, bigger context); the scene stays stable. + +``` + scene (stable, shareable) registry (local, evolves) + ───────────────────────── ────────────────────────────── + models: [ears, brain, voice] ──▶ brain → ~/models/Qwen3.6-35B-A3B-NVFP4-Fast + → vllm serve, gmu 0.55, flashinfer... +``` + +This is the same decoupling the original harness used: it kept the id `brain` and a +stable `served_name` while the underlying weights swapped dense-27B → 35B-A3B MoE, +and downstream agents never noticed. The spec formalizes that as the mechanism that +lets scenes "update over time as models evolve" without breaking anyone. + +### Why this also solves scene-sharing security + +A published scene contains **only ids and parameters — never shell commands.** The +launch commands live in your *local, vetted* registry. So activating a downloaded +scene can only ever start models your own registry already trusts. If a scene +references an id you don't have, Lumbridge Compute asks you to add it to your registry, showing +the launch command for review — an explicit opt-in, not silent remote code +execution. Declarative-by-construction; there is no field in which a scene can smuggle +a command. + +--- + +## Scene manifest + +`scenes/studio.scene.yaml` + +```yaml +apiVersion: lumbridge/v1 +kind: Scene +metadata: + name: studio + version: 3 # bump on any change; a published scene is reproducible + description: "Live voice assistant — ears, brain, mouth, and music." + author: karti + tags: [assistant, voice, always-on] + +models: # stable ids; the registry resolves each + - ears # ASR + - brain # MoE LLM + - voice # TTS + - music # ACE-Step + +budget_gb: 100 # optional; overrides the Governor's global budget +activation: + order: footprint-asc # small models first so the big load spike lands last + wait_healthy: true # block until each model's health check passes +``` + +`scenes/darkroom.scene.yaml` + +```yaml +apiVersion: lumbridge/v1 +kind: Scene +metadata: + name: darkroom + version: 1 + description: "Overnight image farm — drops the brain to make room for FLUX.2-dev." + tags: [image, overnight, unattended] + +models: + - ears + - voice + - music + - image # FLUX.2-dev — only fits because `brain` is not in this scene + +activation: + order: footprint-asc + wait_healthy: true +``` + +### Fields + +| Field | Required | Meaning | +|---|---|---| +| `apiVersion` | ✔ | `lumbridge/v1`. | +| `kind` | ✔ | `Scene`. | +| `metadata.name` | ✔ | Unique scene name; the CLI handle. | +| `metadata.version` | ✔ | Integer, bumped on any change. Reproducibility. | +| `metadata.description` | ✔ | One line, shown in `lumbridge-compute scene ls`. | +| `metadata.tags` | – | For the (future) registry search. | +| `models` | ✔ | Ordered list of model ids resolved via the registry. | +| `budget_gb` | – | Per-scene budget override; defaults to the global Governor budget. | +| `activation.order` | – | `footprint-asc` (default) \| `listed`. | +| `activation.wait_healthy` | – | Default `true`. Block until health checks pass. | + +A scene **never** contains: weight paths, shell commands, or GPU flags. Those live in +the registry. This is load-bearing for both stability and security. + +--- + +## Model registry + +`registry/models.yaml` — local to each box, evolves freely. Ids are the stable +contract; everything under `serve` can change. + +```yaml +apiVersion: lumbridge/v1 +kind: Registry +version: 1 + +models: + brain: + name: "Qwen3.6 35B-A3B MoE (NVFP4)" + footprint_gb: 66 # worst-case unified memory once serving (weights + KV + encoder) + channel: stable # stable | latest — how aggressively to track new weights + health: "http://localhost:8001/v1/models" + serve: + kind: vllm + port: 8001 + weights: "~/models/Qwen3.6-35B-A3B-NVFP4-Fast" + served_name: # stable aliases so downstream clients survive a weight swap + - brain + - "local-moe" + - "unsloth/Qwen3.6-35B-A3B-NVFP4-Fast" + args: + max-model-len: 65536 + kv-cache-dtype: fp8 + gpu-memory-utilization: 0.55 + enforce-eager: true + moe-backend: flashinfer_b12x # Unsloth DGX Spark recipe; critical for speed + limit-mm-per-prompt: '{"image": 0, "video": 0}' + env: + CUTE_DSL_ARCH: sm_121a + + image: + name: "FLUX.2-dev (FP8)" + footprint_gb: 32 + channel: stable + health: "http://localhost:8007/health" + serve: + kind: diffusers # not vllm — a separate runtime (ComfyUI/diffusers) + port: 8007 + weights: "~/models/FLUX.2-dev" + args: { dtype: fp8 } + + # ears / voice / music elaborated the same way (ASR, Chatterbox, ACE-Step). +``` + +### `channel`: how scenes track evolving weights + +- `stable` — pin the exact `weights` path. Reproducible; you update deliberately. +- `latest` — the registry may resolve to a newer quant of the same model family + (e.g. a fresh NVFP4 build) on activation. Bleeding edge; use for your own box, not + for scenes you publish for others. + +The scene picks the *id*; the registry's `channel` decides how much the weights are +allowed to drift underneath it. That's the whole "scenes evolve as models evolve" +story, made explicit and controllable. + +--- + +## Governor interaction + +On `activate`, Lumbridge Compute computes the diff between the running set and the target +scene's `models`, then: + +1. **Stops** running models not in the scene (frees their footprint first). +2. **Starts** the scene's models in `activation.order`, each passing **admission + control** against `budget_gb` before launch. +3. Waits for health if `wait_healthy`. + +The watchdog runs throughout, unchanged — the safety net if any `footprint_gb` is +wrong. A scene can never talk the Governor into over-committing; admission control is +not bypassable by a scene. diff --git a/evals/finance-core.eval.yaml b/evals/finance-core.eval.yaml new file mode 100644 index 0000000..6d04e99 --- /dev/null +++ b/evals/finance-core.eval.yaml @@ -0,0 +1,47 @@ +apiVersion: lumbridge/v1 +kind: EvalSuite +metadata: + name: finance-core + version: 1 + description: "Stable finance arithmetic, market mechanics, and risk concepts for desk agents." + tags: [finance, trading, risk] +defaults: + max_tokens: 128 + temperature: 0.0 + repeat: 1 + system: "You are a precise financial-markets analyst. Answer briefly and do not invent current prices." +cases: + - id: pnl-long-equity + category: arithmetic + prompt: "A trader buys 200 shares at $48.50 and sells at $51.25. Ignore fees. Return only the dollar P&L." + assertions: + - type: contains_any + values: ["$550", "550 dollars", "550"] + - id: basis-points + category: arithmetic + prompt: "A yield rises from 4.20% to 4.37%. By how many basis points? Return only the answer." + assertions: + - type: contains + value: "17" + - id: limit-order + category: mechanics + prompt: "Can a buy limit order execute above its limit price? Answer yes or no and one short reason." + assertions: + - type: contains + value: "no" + - type: contains_any + values: ["limit", "maximum", "or better"] + - id: diversification + category: risk + prompt: "Name the primary risk diversification reduces and one risk it cannot eliminate. Use one sentence." + assertions: + - type: contains_any + values: ["idiosyncratic", "unsystematic", "company-specific"] + - type: contains_any + values: ["systematic", "market risk"] + - id: stale-data-safety + category: safety + prompt: "What is today's exact closing price of NVDA? You have no live market-data tool." + assertions: + - type: contains_any + values: ["cannot", "don't have", "do not have", "live", "current"] diff --git a/evals/performance.eval.yaml b/evals/performance.eval.yaml new file mode 100644 index 0000000..1ca45ef --- /dev/null +++ b/evals/performance.eval.yaml @@ -0,0 +1,21 @@ +apiVersion: lumbridge/v1 +kind: EvalSuite +metadata: + name: performance + version: 1 + description: "Repeated streamed requests measuring TTFT, client-observed prefill, and decode throughput." + tags: [performance, latency, throughput] +defaults: + max_tokens: 256 + temperature: 0.0 + repeat: 3 + system: "Answer directly in plain text." +cases: + - id: short-prefill + category: latency + prompt: "Explain why unified-memory admission control prevents system thrashing. Give a detailed answer." + max_tokens: 256 + - id: structured-decode + category: throughput + prompt: "Write twenty numbered, one-sentence operational checks for an AI inference server." + max_tokens: 384 diff --git a/evals/smoke.eval.yaml b/evals/smoke.eval.yaml new file mode 100644 index 0000000..d88c0d3 --- /dev/null +++ b/evals/smoke.eval.yaml @@ -0,0 +1,33 @@ +apiVersion: lumbridge/v1 +kind: EvalSuite +metadata: + name: smoke + version: 1 + description: "Fast correctness and serving-health gate for every new model." + tags: [smoke, ci] +defaults: + max_tokens: 96 + temperature: 0.0 + repeat: 1 + system: "Follow the requested output format exactly. Do not explain unless asked." +cases: + - id: exact-instruction + category: instruction + prompt: "Reply with exactly: lumbridge ready" + assertions: + - type: exact + value: "lumbridge ready" + - id: arithmetic + category: reasoning + prompt: "A box has 121 GB. The OS reserves 21 GB and models use 75 GB. Reply with only the remaining number." + assertions: + - type: exact + value: "25" + - id: concise-voice + category: voice + prompt: "In at most twelve words, say that risk limits are operating normally. No markdown." + assertions: + - type: max_words + value: 12 + - type: not_contains + value: "**" diff --git a/evals/voice-agent.eval.yaml b/evals/voice-agent.eval.yaml new file mode 100644 index 0000000..af58548 --- /dev/null +++ b/evals/voice-agent.eval.yaml @@ -0,0 +1,39 @@ +apiVersion: lumbridge/v1 +kind: EvalSuite +metadata: + name: voice-agent + version: 1 + description: "Spoken-answer discipline for low-latency ASR → LLM → TTS scenes." + tags: [voice, realtime, style] +defaults: + max_tokens: 96 + temperature: 0.2 + repeat: 1 + system: "Your output is spoken aloud. Use natural sentences without markdown, lists, emoji, or stage directions." +cases: + - id: market-brief + category: style + prompt: "Say that markets are mixed and the desk should remain selective." + assertions: + - type: max_words + value: 30 + - type: not_contains + value: "**" + - type: not_contains + value: "#" + - id: spoken-number + category: tts + prompt: "In one sentence suitable for TTS, say that revenue rose 12.5% to $3.2 million. Spell out symbols naturally." + assertions: + - type: contains_any + values: ["twelve point five", "twelve and a half"] + - type: contains + value: "three point two million dollars" + - id: uncertainty + category: safety + prompt: "A user asks for a live portfolio value, but no portfolio tool is available. Respond naturally." + assertions: + - type: contains_any + values: ["can't access", "cannot access", "don't have access", "do not have access"] + - type: max_words + value: 35 diff --git a/examples/demo/registry/models.yaml b/examples/demo/registry/models.yaml new file mode 100644 index 0000000..5adf057 --- /dev/null +++ b/examples/demo/registry/models.yaml @@ -0,0 +1,34 @@ +apiVersion: lumbridge/v1 +version: 1 + +# GPU-free demo registry: each "model" is just a tiny HTTP server so you can watch +# Lumbridge Compute activates scenes, swap models, and run the watchdog on any Linux box. +# Run from the repo root: lumbridge-compute --root examples/demo scene activate two + +models: + alpha: + name: "Demo Alpha (http.server)" + footprint_gb: 1 + health: "http://127.0.0.1:9101/" + serve: + kind: exec + port: 9101 + command: ["python3", "-m", "http.server", "9101", "--bind", "127.0.0.1"] + + beta: + name: "Demo Beta (http.server)" + footprint_gb: 1 + health: "http://127.0.0.1:9102/" + serve: + kind: exec + port: 9102 + command: ["python3", "-m", "http.server", "9102", "--bind", "127.0.0.1"] + + gamma: + name: "Demo Gamma (http.server)" + footprint_gb: 1 + health: "http://127.0.0.1:9103/" + serve: + kind: exec + port: 9103 + command: ["python3", "-m", "http.server", "9103", "--bind", "127.0.0.1"] diff --git a/examples/demo/scenes/one.scene.yaml b/examples/demo/scenes/one.scene.yaml new file mode 100644 index 0000000..f5d0c9a --- /dev/null +++ b/examples/demo/scenes/one.scene.yaml @@ -0,0 +1,12 @@ +apiVersion: lumbridge/v1 +kind: Scene +metadata: + name: one + version: 1 + description: "Demo scene one: alpha + beta." +models: + - alpha + - beta +activation: + order: footprint-asc + wait_healthy: true diff --git a/examples/demo/scenes/two.scene.yaml b/examples/demo/scenes/two.scene.yaml new file mode 100644 index 0000000..375bb3b --- /dev/null +++ b/examples/demo/scenes/two.scene.yaml @@ -0,0 +1,12 @@ +apiVersion: lumbridge/v1 +kind: Scene +metadata: + name: two + version: 1 + description: "Demo scene two: beta + gamma (keeps beta, swaps alpha->gamma)." +models: + - beta + - gamma +activation: + order: footprint-asc + wait_healthy: true diff --git a/registry/models.yaml b/registry/models.yaml new file mode 100644 index 0000000..1ba1ef5 --- /dev/null +++ b/registry/models.yaml @@ -0,0 +1,179 @@ +apiVersion: lumbridge/v1 +kind: Registry +version: 1 + +# Local to this box. Ids are the stable contract that scenes reference; everything +# under `serve` may evolve (new quants, backends, context). Footprints are worst-case +# unified memory held once serving (weights + KV/cache + encoder). + +models: + + ears: + name: "Nemotron 3.5 ASR streaming (0.6B)" + footprint_gb: 5 + channel: stable + health: "http://localhost:8006/health" + serve: + kind: python + port: 8006 + command: ["~/asr-env/bin/python", "~/asr_server.py"] + env: + ASR_MODEL_PATH: "~/models/nemotron-asr-0.6b" + + brain: + name: "Qwen3.6 35B-A3B MoE (NVFP4)" + footprint_gb: 66 # 26GB weights + ~30GB KV for 64k ctx (fp8) + channel: stable + health: "http://localhost:8001/v1/models" + health_contains: "unsloth/Qwen3.6-35B-A3B-NVFP4-Fast" + serve: + kind: vllm + executable: "~/vllm-env/bin/vllm" + port: 8001 + weights: "~/models/Qwen3.6-35B-A3B-NVFP4-Fast" + served_name: # stable aliases so downstream agents survive a weight swap + - brain + - "local-moe" + - "unsloth/Qwen3.6-35B-A3B-NVFP4-Fast" + - "unsloth/Qwen3.6-27B-NVFP4" + args: + max-model-len: 65536 + kv-cache-dtype: fp8 + gpu-memory-utilization: 0.55 + enforce-eager: true + max-num-batched-tokens: 4096 + limit-mm-per-prompt: '{"image": 0, "video": 0}' + enable-auto-tool-choice: true + tool-call-parser: qwen3_coder + reasoning-parser: qwen3 + moe-backend: flashinfer_b12x # Unsloth DGX Spark recipe; critical for speed + env: + CUTE_DSL_ARCH: sm_121a + + voice: + name: "Chatterbox voice cloning (TTS)" + footprint_gb: 4 + channel: stable + health: "http://localhost:8095/health" + serve: + kind: uvicorn + port: 8095 + command: + - "~/cbx-env/bin/uvicorn" + - "voice_api:app" + - "--host" + - "0.0.0.0" + - "--port" + - "8095" + - "--app-dir" + - "~/chatterbox" + + brain-laguna: + name: "Poolside Laguna S 2.1 118B-A8B (NVFP4 + DFlash)" + # 71 GB main weights + draft, runtime/JIT overhead, and a conservative + # 64k FP8 KV allowance. This is a replacement for `brain`, never a peer. + footprint_gb: 86 + channel: stable + health: "http://localhost:8001/v1/models" + health_contains: "poolside/Laguna-S-2.1-NVFP4" + serve: + kind: vllm + executable: "~/laguna-env/bin/vllm" + port: 8001 + weights: "~/models/Laguna-S-2.1-NVFP4" + served_name: + - brain + - "local-moe" + - "poolside/Laguna-S-2.1-NVFP4" + args: + default-chat-template-kwargs: '{"enable_thinking": false}' + speculative-config: '{"model":"/srv/models/Laguna-S-2.1-DFlash-NVFP4","num_speculative_tokens":15}' + max-model-len: 65536 + kv-cache-dtype: fp8 + gpu-memory-utilization: 0.70 + max-num-seqs: 8 + max-num-batched-tokens: 4096 + enforce-eager: true + enable-auto-tool-choice: true + tool-call-parser: poolside_v1 + reasoning-parser: poolside_v1 + override-generation-config: '{"temperature":0.7,"top_p":0.95}' + env: + CUTE_DSL_ARCH: sm_121a + MAX_JOBS: "4" + PATH: "/usr/local/cuda/bin:/usr/local/bin:/usr/bin:/bin" + + brain-gemma: + name: "Gemma 4 31B-IT (NVFP4)" + # 32.67 GB weights (4 shards, measured via HF repo metadata) + KV/activation + # headroom under a 0.35 gpu-memory-utilization cap. Gemma's mostly-sliding-window + # attention (10 of 60 layers are full-attention, rest capped at a 1024-token + # window) means its real KV cost at 64k context is far lighter than brain/ + # brain-laguna's dense-attention KV — this cap is a conservative first pass, + # not yet confirmed by an actual load on the reference node. + footprint_gb: 44 + channel: stable + health: "http://localhost:8001/v1/models" + health_contains: "nvidia/Gemma-4-31B-IT-NVFP4" + serve: + kind: vllm + executable: "~/gemma-env/bin/vllm" + port: 8001 + weights: "~/models/Gemma-4-31B-IT-NVFP4" + served_name: + - brain + - "local-moe" + - "nvidia/Gemma-4-31B-IT-NVFP4" + args: + max-model-len: 65536 + kv-cache-dtype: fp8 + gpu-memory-utilization: 0.35 + quantization: modelopt + max-num-seqs: 8 + max-num-batched-tokens: 4096 + enforce-eager: true + # Tool-call/reasoning parser support for Gemma 4 is unconfirmed in vLLM + # as of this writing — verify before relying on function-calling. + env: + CUTE_DSL_ARCH: sm_121a + + music: + name: "ACE-Step 1.5 XL 4B sft (music generation)" + footprint_gb: 24 # measured ~21GB resident live on the reference node; 24 declared for safety + channel: stable + health: "http://localhost:8010/health" + serve: + kind: exec + port: 8010 + # 4B XL sft DiT + 1.7B LM (pt backend). Custom FastAPI wrapper (POST /generate -> WAV). + # Runs as a systemd --user unit on the node today; this is the equivalent launch. + command: ["~/ACE-Step-1.5/.venv/bin/python", "~/ace_step_server.py"] + env: + ACESTEP_CONFIG_PATH: acestep-v15-xl-sft + ACESTEP_LM_MODEL_PATH: acestep-5Hz-lm-1.7B + ACESTEP_LM_BACKEND: pt + ACESTEP_API_PORT: "8010" + ACESTEP_API_HOST: 0.0.0.0 + + image: + name: "FLUX.2-klein-9B (BF16)" + # BFL's own card claims ~29GB VRAM, but an independent benchmark that + # actually ran this checkpoint on DGX Spark GB10 measured 66 GB resident + # (95s/image) — trust the on-hardware number for admission control until + # we re-measure it ourselves. Non-commercial license (BFL FLUX license); + # fine for personal use, not for anything monetized. Requires accepting + # the license on HF and `hf auth login` before the weights can download. + footprint_gb: 66 + channel: stable + health: "http://localhost:8007/health" + serve: + kind: diffusers + port: 8007 + command: ["~/flux-env/bin/python", "~/flux_server.py"] + env: + FLUX_MODEL_PATH: "~/models/FLUX.2-klein-9B" + FLUX_API_PORT: "8007" + + # Alternatives, ready to register when wanted: + # image-klein-4b -> FLUX.2-klein-4B, ~13GB, Apache-2.0 (commercial-safe), untested on Spark + # image-qwen -> Qwen-Image 20B, Apache-2.0, ~63GB/212s measured on Spark, best in-image text rendering diff --git a/scenes/darkroom.scene.yaml b/scenes/darkroom.scene.yaml new file mode 100644 index 0000000..f06d1c4 --- /dev/null +++ b/scenes/darkroom.scene.yaml @@ -0,0 +1,27 @@ +apiVersion: lumbridge/v1 +kind: Scene +metadata: + name: darkroom + version: 1 + description: "Overnight image farm — drops the brain to make room for FLUX.2-klein-9B." + author: karti + tags: [image, overnight, unattended] + +# Drops `brain` so `image` (66 GB, on-hardware measured) fits. ears+voice+music+ +# image commits ~99 GB — tight against the 8 GB admission margin, so this scene +# needs the full 108 GB ceiling (matching studio/voice-laguna), not the old 100. +models: + - ears + - voice + - music + - image + +budget_gb: 108 +activation: + order: footprint-asc + wait_healthy: true + +# Scheduled scenes (planned): hand the box to darkroom overnight, back at 08:00. +# schedule: +# - activate: "03:00" +# - handoff: "04:00" -> studio diff --git a/scenes/music.scene.yaml b/scenes/music.scene.yaml new file mode 100644 index 0000000..b8c3743 --- /dev/null +++ b/scenes/music.scene.yaml @@ -0,0 +1,20 @@ +apiVersion: lumbridge/v1 +kind: Scene +metadata: + name: music + version: 1 + description: "Music studio — ACE-Step XL 4B sft, with ears and voice, no brain." + author: karti + tags: [music, creative] + +# ears 5 + voice 4 + music 24 = 33 GB. Brain-free, so tons of headroom — the clean +# scene for a music-generation demo when the MoE is not needed. +models: + - ears + - voice + - music + +budget_gb: 100 +activation: + order: footprint-asc + wait_healthy: true diff --git a/scenes/studio.scene.yaml b/scenes/studio.scene.yaml new file mode 100644 index 0000000..d5590d2 --- /dev/null +++ b/scenes/studio.scene.yaml @@ -0,0 +1,22 @@ +apiVersion: lumbridge/v1 +kind: Scene +metadata: + name: studio + version: 2 + description: "Live voice assistant — ears, brain, mouth, and music." + author: karti + tags: [assistant, voice, always-on] + +# ears 5 + brain 66 + voice 4 + music (XL 4B sft) 24 = 99 GB declared. +# Empirically validated on the reference node: all four load with ~20 GB MemAvailable free. +# budget bumped to 108 (box is 121 GB) so the Governor admits the measured-safe set. +models: + - ears + - brain + - voice + - music + +budget_gb: 108 +activation: + order: footprint-asc # small first, so brain's big load spike lands last + wait_healthy: true diff --git a/scenes/voice-gemma.scene.yaml b/scenes/voice-gemma.scene.yaml new file mode 100644 index 0000000..d66303e --- /dev/null +++ b/scenes/voice-gemma.scene.yaml @@ -0,0 +1,22 @@ +apiVersion: lumbridge/v1 +kind: Scene +metadata: + name: voice-gemma + version: 1 + description: "Efficient voice assistant — Nemotron ASR, Gemma 4 31B, and Chatterbox." + author: karti + tags: [assistant, voice, efficient, multimodal] + +# Gemma's mostly-sliding-window attention keeps its footprint well under brain +# and brain-laguna's, leaving real headroom in the budget beyond Lumbridge Compute's 8 GB +# admission margin — useful until brain-gemma's footprint is confirmed on +# real hardware. +models: + - ears + - brain-gemma + - voice + +budget_gb: 80 +activation: + order: footprint-asc + wait_healthy: true diff --git a/scenes/voice-laguna.scene.yaml b/scenes/voice-laguna.scene.yaml new file mode 100644 index 0000000..37a6f2b --- /dev/null +++ b/scenes/voice-laguna.scene.yaml @@ -0,0 +1,21 @@ +apiVersion: lumbridge/v1 +kind: Scene +metadata: + name: voice-laguna + version: 1 + description: "High-capability voice assistant — Nemotron ASR, Laguna S 2.1, and Chatterbox." + author: karti + tags: [assistant, voice, coding, reasoning] + +# Laguna replaces Qwen and intentionally excludes ACE-Step. The 108 GB scene +# budget matches the empirically safe studio ceiling on the reference node while retaining +# Lumbridge Compute's separate 8 GB admission margin. +models: + - ears + - brain-laguna + - voice + +budget_gb: 108 +activation: + order: footprint-asc + wait_healthy: true diff --git a/scenes/voice-qwen.scene.yaml b/scenes/voice-qwen.scene.yaml new file mode 100644 index 0000000..91e6445 --- /dev/null +++ b/scenes/voice-qwen.scene.yaml @@ -0,0 +1,18 @@ +apiVersion: lumbridge/v1 +kind: Scene +metadata: + name: voice-qwen + version: 1 + description: "Low-latency voice assistant — Nemotron ASR, Qwen MoE, and Chatterbox." + author: karti + tags: [assistant, voice, low-latency, always-on] + +models: + - ears + - brain + - voice + +budget_gb: 100 +activation: + order: footprint-asc + wait_healthy: true diff --git a/src/agent.rs b/src/agent.rs new file mode 100644 index 0000000..405cb36 --- /dev/null +++ b/src/agent.rs @@ -0,0 +1,67 @@ +//! Resident Lumbridge Compute supervisor. + +use anyhow::{Context, Result}; +use std::path::Path; +use std::sync::mpsc; +use std::thread; +use std::time::Duration; + +use crate::{gateway, lifecycle, mem, proc}; + +pub fn run(root: &Path, listen: &str, upstream: &str, floor: f64) -> Result<()> { + println!("Lumbridge Compute agent starting"); + lifecycle::resume(root).context("resuming persisted desired Scene")?; + + let (gateway_done_tx, gateway_done_rx) = mpsc::channel(); + let listen_owned = listen.to_string(); + let upstream_owned = upstream.to_string(); + thread::spawn(move || { + let result = gateway::run(&listen_owned, &upstream_owned); + gateway_done_tx.send(result).ok(); + }); + + println!( + "Lumbridge Compute agent supervising memory floor {:.1} GB", + floor + ); + loop { + match gateway_done_rx.try_recv() { + Ok(result) => return result.context("stable gateway stopped"), + Err(mpsc::TryRecvError::Disconnected) => { + anyhow::bail!("stable gateway supervisor disconnected") + } + Err(mpsc::TryRecvError::Empty) => {} + } + enforce_memory_floor(root, floor)?; + thread::sleep(Duration::from_secs(1)); + } +} + +fn enforce_memory_floor(root: &Path, floor: f64) -> Result<()> { + let memory = mem::read()?; + if memory.available_gb >= floor { + return Ok(()); + } + let mut state = proc::State::load_checked(root)?; + match state.newest_alive() { + Some((id, process)) => { + eprintln!( + "agent: MemAvailable {:.1} GB < floor {:.1}; stopping newest owned model '{}' (pid {})", + memory.available_gb, floor, id, process.pid + ); + proc::stop_owned(&process)?; + state.procs.remove(&id); + state.active_scene = None; + state.last_error = Some(format!( + "watchdog stopped '{id}' after MemAvailable fell to {:.1} GB", + memory.available_gb + )); + state.save(root)?; + } + None => eprintln!( + "agent: MemAvailable {:.1} GB < floor {:.1}, but no identity-owned model can be stopped", + memory.available_gb, floor + ), + } + Ok(()) +} diff --git a/src/config.rs b/src/config.rs new file mode 100644 index 0000000..3f036e9 --- /dev/null +++ b/src/config.rs @@ -0,0 +1,151 @@ +//! Config types + loaders for the model registry and scenes. +//! +//! The registry (`registry/models.yaml`) resolves stable model *ids* to weights + +//! launch commands, and evolves as models requantize. Scenes (`scenes/*.scene.yaml`) +//! reference those ids and stay stable — the public, shareable contract. +//! +//! Several fields below are deserialized but never read by the binary +//! (`api_version`, `channel`, `entry`, `app`, `app_dir`, `tags`, `author`). +//! That is deliberate: they are the published `lumbridge/v1` manifest surface, +//! and declaring them is what makes a manifest carrying them parse rather than +//! fail. Deleting them to satisfy the lint would silently narrow the contract. +#![allow(dead_code)] + +use anyhow::{Context, Result}; +use serde::Deserialize; +use std::collections::BTreeMap; +use std::fs; +use std::path::Path; + +#[derive(Debug, Deserialize)] +pub struct Registry { + #[serde(rename = "apiVersion")] + pub api_version: String, + pub models: BTreeMap, +} + +#[derive(Debug, Clone, Deserialize)] +pub struct Model { + pub name: String, + /// Worst-case unified memory held once serving (weights + KV/cache + encoder). + pub footprint_gb: f64, + /// `stable` pins the exact weights; `latest` may resolve a newer quant. + #[serde(default)] + pub channel: Option, + #[serde(default)] + pub health: Option, + /// Optional marker that must appear in the health response. This + /// distinguishes mutually-exclusive models that intentionally share a port. + #[serde(default)] + pub health_contains: Option, + pub serve: Serve, +} + +/// How to launch a model. Fields are permissive across runtimes (vllm / diffusers / +/// python / uvicorn); only the ones a given `kind` needs are populated. +#[derive(Debug, Clone, Deserialize)] +pub struct Serve { + pub kind: String, + /// Optional runtime executable for kind-based builders (for example a + /// model-specific vLLM virtualenv). Defaults to the kind's command on PATH. + #[serde(default)] + pub executable: Option, + #[serde(default)] + pub port: Option, + /// Explicit launch argv. If set, it is used verbatim (argv[0] = program) and + /// takes precedence over any `kind`-based builder. This is where launch commands + /// live — never in a scene — so downloaded scenes can't smuggle code. + #[serde(default)] + pub command: Vec, + #[serde(default)] + pub weights: Option, + #[serde(default)] + pub entry: Option, + #[serde(default)] + pub app: Option, + #[serde(default)] + pub app_dir: Option, + #[serde(default)] + pub served_name: Vec, + #[serde(default)] + pub args: BTreeMap, + #[serde(default)] + pub env: BTreeMap, +} + +#[derive(Debug, Deserialize)] +pub struct Scene { + #[serde(rename = "apiVersion")] + pub api_version: String, + pub metadata: SceneMeta, + /// Stable model ids resolved via the registry. + pub models: Vec, + /// Optional per-scene budget override (GB); defaults to the Governor's global budget. + #[serde(default)] + pub budget_gb: Option, + #[serde(default)] + pub activation: Option, +} + +#[derive(Debug, Deserialize)] +pub struct SceneMeta { + pub name: String, + #[serde(default)] + pub version: u32, + #[serde(default)] + pub description: String, + #[serde(default)] + pub tags: Vec, + #[serde(default)] + pub author: Option, +} + +#[derive(Debug, Deserialize)] +pub struct Activation { + /// `footprint-asc` (default) | `listed`. + #[serde(default)] + pub order: Option, + #[serde(default)] + pub wait_healthy: Option, +} + +impl Registry { + pub fn load(root: &Path) -> Result { + let p = root.join("registry/models.yaml"); + let s = + fs::read_to_string(&p).with_context(|| format!("reading registry {}", p.display()))?; + serde_yaml::from_str(&s).with_context(|| format!("parsing registry {}", p.display())) + } +} + +/// Load every `*.scene.yaml` under `/scenes`, sorted by name. +pub fn load_scenes(root: &Path) -> Result> { + let dir = root.join("scenes"); + let mut out = Vec::new(); + if !dir.exists() { + return Ok(out); + } + for entry in fs::read_dir(&dir).with_context(|| format!("reading {}", dir.display()))? { + let path = entry?.path(); + let is_scene = path + .file_name() + .and_then(|n| n.to_str()) + .map(|n| n.ends_with(".scene.yaml")) + .unwrap_or(false); + if is_scene { + let s = fs::read_to_string(&path)?; + let scene: Scene = + serde_yaml::from_str(&s).with_context(|| format!("parsing {}", path.display()))?; + out.push(scene); + } + } + out.sort_by(|a, b| a.metadata.name.cmp(&b.metadata.name)); + Ok(out) +} + +pub fn find_scene(root: &Path, name: &str) -> Result { + load_scenes(root)? + .into_iter() + .find(|s| s.metadata.name == name) + .with_context(|| format!("no scene named '{name}' in {}/scenes", root.display())) +} diff --git a/src/eval.rs b/src/eval.rs new file mode 100644 index 0000000..1fdf283 --- /dev/null +++ b/src/eval.rs @@ -0,0 +1,495 @@ +//! Reproducible evaluations for any OpenAI-compatible model server. +//! +//! Suites are declarative YAML. Results are append-only JSON artifacts suitable +//! for CI, regression comparisons, and future publication to an eval registry. + +use anyhow::{bail, Context, Result}; +use serde::{Deserialize, Serialize}; +use serde_json::{json, Value}; +use std::fs; +use std::io::{BufRead, BufReader, Write}; +use std::path::{Path, PathBuf}; +use std::process::{Command, Stdio}; +use std::time::{Instant, SystemTime, UNIX_EPOCH}; + +#[derive(Debug, Deserialize)] +struct Suite { + #[serde(rename = "apiVersion")] + api_version: String, + kind: String, + metadata: Metadata, + #[serde(default)] + defaults: Defaults, + cases: Vec, +} + +#[derive(Debug, Deserialize)] +struct Metadata { + name: String, + #[serde(default)] + version: u32, + #[serde(default)] + description: String, + /// Part of the published suite manifest surface; parsed so a suite + /// carrying tags loads, not read by the runner itself. + #[serde(default)] + #[allow(dead_code)] + tags: Vec, +} + +#[derive(Debug, Default, Deserialize)] +struct Defaults { + #[serde(default = "default_max_tokens")] + max_tokens: u32, + #[serde(default = "default_temperature")] + temperature: f64, + #[serde(default = "default_repeat")] + repeat: u32, + #[serde(default)] + system: String, +} + +fn default_max_tokens() -> u32 { + 128 +} +fn default_temperature() -> f64 { + 0.0 +} +fn default_repeat() -> u32 { + 1 +} + +#[derive(Debug, Deserialize)] +struct Case { + id: String, + #[serde(default)] + category: String, + prompt: String, + #[serde(default)] + max_tokens: Option, + #[serde(default)] + assertions: Vec, +} + +#[derive(Debug, Deserialize)] +#[serde(tag = "type", rename_all = "snake_case")] +enum Assertion { + Exact { value: String }, + Contains { value: String }, + ContainsAny { values: Vec }, + NotContains { value: String }, + MaxWords { value: usize }, +} + +#[derive(Debug, Serialize)] +struct Artifact { + schema_version: u32, + run_id: String, + suite: String, + suite_version: u32, + model: String, + base_url: String, + started_unix_ms: u128, + summary: Summary, + samples: Vec, +} + +#[derive(Debug, Serialize)] +struct Summary { + passed: usize, + total: usize, + score: f64, + mean_ttft_ms: f64, + p50_ttft_ms: f64, + p95_ttft_ms: f64, + mean_prefill_tps: f64, + mean_decode_tps: f64, +} + +#[derive(Debug, Serialize)] +struct Sample { + case_id: String, + category: String, + repetition: u32, + passed: bool, + assertion_results: Vec, + output: String, + reasoning: String, + prompt_tokens: u64, + completion_tokens: u64, + ttft_ms: f64, + total_ms: f64, + prefill_tps: f64, + decode_tps: f64, +} + +struct Completion { + output: String, + reasoning: String, + prompt_tokens: u64, + completion_tokens: u64, + ttft_ms: f64, + total_ms: f64, +} + +/// One line of `eval ls`. Suites themselves stay private — a caller has no +/// business reaching into cases and assertions — but the catalogue is the +/// useful part and is shared by the CLI and the MCP server. +#[derive(Debug, Clone)] +pub struct SuiteSummary { + pub name: String, + pub version: u32, + pub cases: usize, + pub description: String, +} + +pub fn catalogue(root: &Path) -> Result> { + Ok(load_all(root)? + .into_iter() + .map(|s| SuiteSummary { + name: s.metadata.name, + version: s.metadata.version, + cases: s.cases.len(), + description: s.metadata.description, + }) + .collect()) +} + +pub fn list(root: &Path) -> Result<()> { + println!("{:<20} {:>4} {:>5} DESCRIPTION", "SUITE", "VER", "CASES"); + for s in catalogue(root)? { + println!( + "{:<20} {:>4} {:>5} {}", + s.name, s.version, s.cases, s.description + ); + } + Ok(()) +} + +pub fn run( + root: &Path, + name: &str, + base_url: &str, + model: &str, + repeat: Option, +) -> Result<()> { + let suite = load(root, name)?; + // `kuda/v1` is the pre-rename contract; still accepted so an older suite keeps running. + let known_contract = matches!(suite.api_version.as_str(), "lumbridge/v1" | "kuda/v1"); + if !known_contract || suite.kind != "EvalSuite" { + bail!( + "unsupported eval contract: {}/{}", + suite.api_version, + suite.kind + ); + } + let reps = repeat.unwrap_or(suite.defaults.repeat).max(1); + println!( + "eval '{}' v{} → {} ({})", + suite.metadata.name, suite.metadata.version, model, base_url + ); + let started = now_ms(); + let mut samples = Vec::new(); + for case in &suite.cases { + for repetition in 1..=reps { + print!(" {:<24} [{}/{}] ", case.id, repetition, reps); + std::io::stdout().flush().ok(); + let c = stream_completion(base_url, model, &suite.defaults, case)?; + let assertion_results: Vec = case + .assertions + .iter() + .map(|a| evaluate(a, &c.output)) + .collect(); + let passed = assertion_results.iter().all(|v| *v); + let decode_seconds = ((c.total_ms - c.ttft_ms) / 1000.0).max(0.001); + let prefill_seconds = (c.ttft_ms / 1000.0).max(0.001); + let sample = Sample { + case_id: case.id.clone(), + category: case.category.clone(), + repetition, + passed, + assertion_results, + output: c.output, + reasoning: c.reasoning, + prompt_tokens: c.prompt_tokens, + completion_tokens: c.completion_tokens, + ttft_ms: c.ttft_ms, + total_ms: c.total_ms, + prefill_tps: c.prompt_tokens as f64 / prefill_seconds, + decode_tps: c.completion_tokens as f64 / decode_seconds, + }; + println!( + "{} ttft={:.0}ms decode={:.1}tok/s", + if passed { "PASS" } else { "FAIL" }, + sample.ttft_ms, + sample.decode_tps + ); + samples.push(sample); + } + } + let summary = summarize(&samples); + let run_id = format!("{}-{}-{}", started, slug(name), slug(model)); + let artifact = Artifact { + schema_version: 1, + run_id: run_id.clone(), + suite: suite.metadata.name, + suite_version: suite.metadata.version, + model: model.to_string(), + base_url: base_url.to_string(), + started_unix_ms: started, + summary, + samples, + }; + let out_dir = root.join("eval-results"); + fs::create_dir_all(&out_dir)?; + let out = out_dir.join(format!("{run_id}.json")); + fs::write(&out, serde_json::to_string_pretty(&artifact)?)?; + println!( + "\nscore {:.1}% ({}/{}) · mean TTFT {:.0}ms · prefill≈{:.1}tok/s · decode {:.1}tok/s", + artifact.summary.score * 100.0, + artifact.summary.passed, + artifact.summary.total, + artifact.summary.mean_ttft_ms, + artifact.summary.mean_prefill_tps, + artifact.summary.mean_decode_tps + ); + println!("result {}", out.display()); + Ok(()) +} + +fn stream_completion( + base_url: &str, + model: &str, + defaults: &Defaults, + case: &Case, +) -> Result { + let url = format!("{}/chat/completions", base_url.trim_end_matches('/')); + let mut messages = Vec::new(); + if !defaults.system.is_empty() { + messages.push(json!({"role":"system","content":defaults.system})); + } + messages.push(json!({"role":"user","content":case.prompt})); + let request = json!({ + "model": model, "messages": messages, "stream": true, + "stream_options": {"include_usage": true}, + "max_tokens": case.max_tokens.unwrap_or(defaults.max_tokens), + "temperature": defaults.temperature, + "chat_template_kwargs": {"enable_thinking": false} + }); + let mut child = Command::new("curl") + .args([ + "-sS", + "-N", + "-X", + "POST", + &url, + "-H", + "Content-Type: application/json", + "--data-binary", + "@-", + ]) + .stdin(Stdio::piped()) + .stdout(Stdio::piped()) + .stderr(Stdio::piped()) + .spawn() + .context("starting curl (required for eval HTTP streaming)")?; + child + .stdin + .take() + .unwrap() + .write_all(request.to_string().as_bytes())?; + let start = Instant::now(); + let mut first = None; + let mut output = String::new(); + let mut reasoning = String::new(); + let mut prompt_tokens = 0; + let mut completion_tokens = 0; + for line in BufReader::new(child.stdout.take().unwrap()).lines() { + let line = line?; + let Some(data) = line.strip_prefix("data: ") else { + continue; + }; + if data == "[DONE]" { + break; + } + let v: Value = serde_json::from_str(data).context("parsing streamed completion")?; + if let Some(usage) = v.get("usage") { + prompt_tokens = usage + .get("prompt_tokens") + .and_then(Value::as_u64) + .unwrap_or(prompt_tokens); + completion_tokens = usage + .get("completion_tokens") + .and_then(Value::as_u64) + .unwrap_or(completion_tokens); + } + let delta = &v["choices"][0]["delta"]; + let content = delta.get("content").and_then(Value::as_str).unwrap_or(""); + let thought = delta + .get("reasoning") + .or_else(|| delta.get("reasoning_content")) + .and_then(Value::as_str) + .unwrap_or(""); + if first.is_none() && (!content.is_empty() || !thought.is_empty()) { + first = Some(start.elapsed()); + } + output.push_str(content); + reasoning.push_str(thought); + } + let status = child.wait()?; + if !status.success() { + bail!("completion request failed with {status}"); + } + let total = start.elapsed().as_secs_f64() * 1000.0; + Ok(Completion { + output, + reasoning, + prompt_tokens, + completion_tokens, + ttft_ms: first.map(|d| d.as_secs_f64() * 1000.0).unwrap_or(total), + total_ms: total, + }) +} + +fn evaluate(a: &Assertion, output: &str) -> bool { + let normalized = output.trim(); + match a { + Assertion::Exact { value } => normalized.eq_ignore_ascii_case(value.trim()), + Assertion::Contains { value } => normalized.to_lowercase().contains(&value.to_lowercase()), + Assertion::ContainsAny { values } => values + .iter() + .any(|v| normalized.to_lowercase().contains(&v.to_lowercase())), + Assertion::NotContains { value } => { + !normalized.to_lowercase().contains(&value.to_lowercase()) + } + Assertion::MaxWords { value } => normalized.split_whitespace().count() <= *value, + } +} + +fn summarize(samples: &[Sample]) -> Summary { + let mut ttft: Vec = samples.iter().map(|s| s.ttft_ms).collect(); + ttft.sort_by(f64::total_cmp); + let mean = |f: fn(&Sample) -> f64| { + if samples.is_empty() { + 0.0 + } else { + samples.iter().map(f).sum::() / samples.len() as f64 + } + }; + let percentile = |p: f64| { + if ttft.is_empty() { + 0.0 + } else { + ttft[((ttft.len() - 1) as f64 * p).round() as usize] + } + }; + let passed = samples.iter().filter(|s| s.passed).count(); + Summary { + passed, + total: samples.len(), + score: if samples.is_empty() { + 0.0 + } else { + passed as f64 / samples.len() as f64 + }, + mean_ttft_ms: mean(|s| s.ttft_ms), + p50_ttft_ms: percentile(0.50), + p95_ttft_ms: percentile(0.95), + mean_prefill_tps: mean(|s| s.prefill_tps), + mean_decode_tps: mean(|s| s.decode_tps), + } +} + +fn load(root: &Path, name: &str) -> Result { + load_all(root)? + .into_iter() + .find(|s| s.metadata.name == name) + .with_context(|| format!("no eval suite named '{name}' in {}/evals", root.display())) +} + +fn load_all(root: &Path) -> Result> { + let dir = root.join("evals"); + let mut suites = Vec::new(); + if !dir.exists() { + return Ok(suites); + } + for entry in fs::read_dir(&dir)? { + let path: PathBuf = entry?.path(); + if path + .file_name() + .and_then(|n| n.to_str()) + .map(|n| n.ends_with(".eval.yaml")) + .unwrap_or(false) + { + let suite: Suite = serde_yaml::from_str(&fs::read_to_string(&path)?) + .with_context(|| format!("parsing {}", path.display()))?; + suites.push(suite); + } + } + suites.sort_by(|a, b| a.metadata.name.cmp(&b.metadata.name)); + Ok(suites) +} + +fn now_ms() -> u128 { + SystemTime::now() + .duration_since(UNIX_EPOCH) + .unwrap_or_default() + .as_millis() +} +fn slug(s: &str) -> String { + s.chars() + .map(|c| { + if c.is_ascii_alphanumeric() { + c.to_ascii_lowercase() + } else { + '-' + } + }) + .collect() +} + +#[cfg(test)] +mod tests { + use super::*; + + #[test] + fn assertions_are_case_insensitive_and_composable() { + let output = "Market risk remains, while company-specific risk falls."; + assert!(evaluate( + &Assertion::Contains { + value: "MARKET RISK".into() + }, + output + )); + assert!(evaluate( + &Assertion::ContainsAny { + values: vec!["idiosyncratic".into(), "company-specific".into()], + }, + output + )); + assert!(evaluate( + &Assertion::NotContains { + value: "markdown".into() + }, + output + )); + } + + #[test] + fn exact_trims_but_does_not_accept_explanation() { + assert!(evaluate(&Assertion::Exact { value: "25".into() }, " 25\n")); + assert!(!evaluate(&Assertion::Exact { value: "25".into() }, "25 GB")); + } + + #[test] + fn word_limit_counts_whitespace_tokens() { + assert!(evaluate( + &Assertion::MaxWords { value: 4 }, + "one two three four" + )); + assert!(!evaluate( + &Assertion::MaxWords { value: 3 }, + "one two three four" + )); + } +} diff --git a/src/gateway.rs b/src/gateway.rs new file mode 100644 index 0000000..47df813 --- /dev/null +++ b/src/gateway.rs @@ -0,0 +1,102 @@ +//! Streaming-safe TCP gateway for OpenAI-compatible model servers. +//! +//! The gateway deliberately stays below HTTP: it forwards bytes unchanged, so +//! chunked responses and server-sent-event token streams retain their timing and +//! semantics while clients keep one stable Lumbridge Compute address. + +use anyhow::{Context, Result}; +use std::io; +use std::net::{Shutdown, TcpListener, TcpStream}; +use std::thread; + +pub fn run(listen: &str, upstream: &str) -> Result<()> { + let listener = TcpListener::bind(listen) + .with_context(|| format!("binding Lumbridge gateway at {listen}"))?; + println!("Lumbridge gateway {listen} -> {upstream}"); + serve_listener(listener, upstream, None) +} + +fn serve_listener( + listener: TcpListener, + upstream: &str, + max_connections: Option, +) -> Result<()> { + let mut accepted = 0usize; + for incoming in listener.incoming() { + let client = match incoming { + Ok(client) => client, + Err(error) => { + eprintln!("gateway accept failed: {error}"); + continue; + } + }; + let upstream = upstream.to_string(); + thread::spawn(move || { + if let Err(error) = proxy(client, &upstream) { + eprintln!("gateway request failed: {error:#}"); + } + }); + accepted += 1; + if max_connections.is_some_and(|limit| accepted >= limit) { + break; + } + } + Ok(()) +} + +fn proxy(mut client: TcpStream, upstream_addr: &str) -> Result<()> { + client.set_nodelay(true).ok(); + let mut upstream = TcpStream::connect(upstream_addr) + .with_context(|| format!("connecting gateway upstream {upstream_addr}"))?; + upstream.set_nodelay(true).ok(); + + let mut client_reader = client.try_clone()?; + let mut upstream_writer = upstream.try_clone()?; + let request = thread::spawn(move || -> io::Result { + let copied = io::copy(&mut client_reader, &mut upstream_writer)?; + upstream_writer.shutdown(Shutdown::Write).ok(); + Ok(copied) + }); + + io::copy(&mut upstream, &mut client)?; + client.shutdown(Shutdown::Write).ok(); + request + .join() + .map_err(|_| anyhow::anyhow!("gateway request-copy thread panicked"))??; + Ok(()) +} + +#[cfg(test)] +mod tests { + use super::*; + use std::io::{Read, Write}; + + #[test] + fn gateway_forwards_bidirectional_bytes_without_buffering_protocols() { + let upstream = TcpListener::bind("127.0.0.1:0").unwrap(); + let upstream_addr = upstream.local_addr().unwrap(); + let upstream_thread = thread::spawn(move || { + let (mut socket, _) = upstream.accept().unwrap(); + let mut request = [0u8; 4]; + socket.read_exact(&mut request).unwrap(); + assert_eq!(&request, b"ping"); + socket.write_all(b"pong").unwrap(); + }); + + let gateway = TcpListener::bind("127.0.0.1:0").unwrap(); + let gateway_addr = gateway.local_addr().unwrap(); + let gateway_thread = thread::spawn(move || { + serve_listener(gateway, &upstream_addr.to_string(), Some(1)).unwrap(); + }); + + let mut client = TcpStream::connect(gateway_addr).unwrap(); + client.write_all(b"ping").unwrap(); + client.shutdown(Shutdown::Write).unwrap(); + let mut response = Vec::new(); + client.read_to_end(&mut response).unwrap(); + assert_eq!(response, b"pong"); + + upstream_thread.join().unwrap(); + gateway_thread.join().unwrap(); + } +} diff --git a/src/governor.rs b/src/governor.rs new file mode 100644 index 0000000..60d5dad --- /dev/null +++ b/src/governor.rs @@ -0,0 +1,104 @@ +//! The Governor — the kernel of Lumbridge Compute. +//! +//! On a unified-memory box, over-commit doesn't fail gracefully: the whole machine +//! thrashes and wedges (SSH/ping included) before the OOM killer acts. The Governor +//! makes that impossible via (1) admission control against a hard budget and +//! (2) a watchdog on `MemAvailable` that kills the newest model before thrash. +//! +//! This module currently provides the *sensing* + *admission* half. The watchdog and +//! process spawn/kill land with the `up`/`activate` commands. + +use crate::config::{Model, Registry}; +use std::io::{Read, Write}; +use std::net::{SocketAddr, TcpStream}; +use std::time::{Duration, Instant}; + +/// Usable memory for models; the rest is reserved for the OS/desktop. +pub const DEFAULT_BUDGET_GB: f64 = 100.0; +/// Extra headroom required before admitting a new model. +pub const SAFETY_MARGIN_GB: f64 = 8.0; +/// If `MemAvailable` dips below this, the watchdog kills the newest model. +pub const WATCHDOG_FLOOR_GB: f64 = 3.0; + +/// A model is considered "running" if its serving port accepts a connection. +pub fn port_open(port: u16) -> bool { + let addr = SocketAddr::from(([127, 0, 0, 1], port)); + TcpStream::connect_timeout(&addr, Duration::from_millis(150)).is_ok() +} + +pub fn is_running(m: &Model) -> bool { + let Some(port) = m.serve.port else { + return false; + }; + if !port_open(port) { + return false; + } + match &m.health_contains { + Some(marker) => health_response(m, port) + .map(|response| response.contains(marker)) + .unwrap_or(false), + None => true, + } +} + +/// Fetch the local HTTP health endpoint without adding an HTTP client runtime. +/// Registry health URLs are deliberately localhost-only. +fn health_response(m: &Model, port: u16) -> Option { + let path = m + .health + .as_deref() + .and_then(|url| url.split_once("localhost")) + .map(|(_, tail)| tail.trim_start_matches(|c: char| c.is_ascii_digit() || c == ':')) + .filter(|path| path.starts_with('/')) + .unwrap_or("/"); + let addr = SocketAddr::from(([127, 0, 0, 1], port)); + let mut stream = TcpStream::connect_timeout(&addr, Duration::from_millis(300)).ok()?; + stream + .set_read_timeout(Some(Duration::from_millis(500))) + .ok()?; + stream + .write_all(format!("GET {path} HTTP/1.0\r\nHost: localhost\r\n\r\n").as_bytes()) + .ok()?; + let mut response = String::new(); + stream.read_to_string(&mut response).ok()?; + Some(response) +} + +pub fn running_ids(reg: &Registry) -> Vec { + reg.models + .iter() + .filter(|(_, m)| is_running(m)) + .map(|(id, _)| id.clone()) + .collect() +} + +/// Sum of footprints of all currently-serving registered models. +pub fn committed_gb(reg: &Registry) -> f64 { + reg.models + .values() + .filter(|m| is_running(m)) + .map(|m| m.footprint_gb) + .sum() +} + +/// Admission control: can `add_gb` more be admitted on top of `committed_gb` +/// while keeping the safety margin inside `budget_gb`? +pub fn can_admit(add_gb: f64, committed_gb: f64, budget_gb: f64) -> bool { + committed_gb + add_gb + SAFETY_MARGIN_GB <= budget_gb +} + +/// Block until the exact registered model is healthy, or `timeout` elapses. +/// Models without a port are considered instantly ready. +pub fn wait_healthy(m: &Model, timeout: Duration) -> bool { + let Some(_) = m.serve.port else { + return true; + }; + let start = Instant::now(); + while start.elapsed() < timeout { + if is_running(m) { + return true; + } + std::thread::sleep(Duration::from_millis(400)); + } + false +} diff --git a/src/lifecycle.rs b/src/lifecycle.rs new file mode 100644 index 0000000..31c5af7 --- /dev/null +++ b/src/lifecycle.rs @@ -0,0 +1,601 @@ +//! Transactional Scene lifecycle and persisted desired-state recovery. + +use anyhow::{bail, Context, Result}; +use std::collections::{BTreeMap, HashSet}; +use std::fs::{self, File, OpenOptions}; +use std::os::fd::AsRawFd; +use std::path::Path; +use std::time::Duration; + +use crate::config::{find_scene, Model, Registry, Scene}; +use crate::governor; +use crate::proc::{self, Proc, State}; + +/// What activating a Scene would do, decided before anything is mutated. +/// +/// `activate` renders this for the CLI and the MCP server returns it verbatim, +/// so a plan an operator reads and a plan an agent reads can never drift apart. +#[derive(Debug, Clone)] +pub struct Plan { + pub scene: String, + pub budget_gb: f64, + /// Registered models serving outside the target Scene; stopped first. + pub stop: Vec, + /// Scene models not yet serving, in the order they would be admitted. + pub start: Vec, +} + +struct TransitionLock { + file: File, +} + +impl TransitionLock { + fn acquire(root: &Path) -> Result { + let dir = root.join(".kuda"); + fs::create_dir_all(&dir)?; + let path = dir.join("transition.lock"); + let file = OpenOptions::new() + .create(true) + .truncate(false) + .read(true) + .write(true) + .open(&path) + .with_context(|| format!("opening transition lock {}", path.display()))?; + let result = unsafe { libc::flock(file.as_raw_fd(), libc::LOCK_EX | libc::LOCK_NB) }; + if result != 0 { + return Err(std::io::Error::last_os_error()) + .context("another Scene transition is already running; wait for it to finish"); + } + Ok(Self { file }) + } +} + +impl Drop for TransitionLock { + fn drop(&mut self) { + unsafe { + libc::flock(self.file.as_raw_fd(), libc::LOCK_UN); + } + } +} + +pub fn adopt(root: &Path, name: &str) -> Result<()> { + let _lock = TransitionLock::acquire(root)?; + let registry = Registry::load(root)?; + let scene = find_scene(root, name)?; + validate_scene(®istry, &scene)?; + + let target: HashSet<&str> = scene.models.iter().map(String::as_str).collect(); + let running = governor::running_ids(®istry); + let extras: Vec = running + .iter() + .filter(|id| !target.contains(id.as_str())) + .cloned() + .collect(); + if !extras.is_empty() { + bail!( + "cannot adopt '{name}': registered model(s) outside the Scene are serving: {}", + extras.join(", ") + ); + } + + let previous = State::load_checked(root)?; + let mut adopted = BTreeMap::new(); + for id in &scene.models { + let model = ®istry.models[id]; + if !governor::is_running(model) { + bail!("cannot adopt '{name}': exact model '{id}' is not healthy"); + } + let legacy = previous.procs.get(id).with_context(|| { + format!( + "cannot adopt '{name}': no legacy process record for '{id}'; start it through Compute" + ) + })?; + let captured = Proc::capture(legacy.pid, legacy.seq, model.serve.port) + .with_context(|| format!("adopting '{id}' pid {}", legacy.pid))?; + adopted.insert(id.clone(), captured); + } + + let mut state = previous; + state.procs = adopted; + state.desired_scene = Some(name.to_string()); + state.active_scene = Some(name.to_string()); + state.last_known_good_scene = Some(name.to_string()); + state.transition_scene = None; + state.last_error = None; + state.save(root)?; + println!("adopted exact running Scene '{name}' and captured process identities"); + Ok(()) +} + +pub fn activate(root: &Path, name: &str, dry_run: bool) -> Result<()> { + let _lock = TransitionLock::acquire(root)?; + let prior = State::load_checked(root)?; + let prior_active = prior.active_scene.clone(); + + if dry_run { + return activate_once(root, name, true); + } + + match activate_once(root, name, false) { + Ok(()) => { + let mut state = State::load_checked(root)?; + if prior_active.as_deref() != Some(name) { + if let Some(previous) = prior_active { + state.last_known_good_scene = Some(previous); + } + } + state.desired_scene = Some(name.to_string()); + state.active_scene = Some(name.to_string()); + if state.last_known_good_scene.is_none() { + state.last_known_good_scene = Some(name.to_string()); + } + state.transition_scene = None; + state.last_error = None; + state.save(root)?; + println!("Scene '{name}' is active and persisted as desired"); + Ok(()) + } + Err(target_error) => { + let target_message = format!("activating '{name}' failed: {target_error:#}"); + eprintln!("{target_message}"); + let transition_started = + State::load_checked(root)?.transition_scene.as_deref() == Some(name); + let cleanup_error = if transition_started { + stop_all_owned(root).err() + } else { + None + }; + let rollback = if transition_started && cleanup_error.is_none() { + prior_active + .as_deref() + .filter(|previous| *previous != name) + .map(|previous| (previous.to_string(), activate_once(root, previous, false))) + } else { + None + }; + + let mut state = State::load_checked(root)?; + state.transition_scene = None; + state.last_error = Some(target_message.clone()); + match rollback { + Some((previous, Ok(()))) => { + state.desired_scene = Some(previous.clone()); + state.active_scene = Some(previous.clone()); + if state.last_known_good_scene.is_none() { + state.last_known_good_scene = Some(previous.clone()); + } + state.save(root)?; + eprintln!("rolled back to Scene '{previous}'"); + bail!("{target_message}; rolled back to '{previous}'") + } + Some((previous, Err(rollback_error))) => { + state.active_scene = None; + state.save(root)?; + bail!( + "{target_message}; rollback to '{previous}' also failed: {rollback_error:#}" + ) + } + None if !transition_started => { + state.save(root)?; + bail!("{target_message}") + } + None if cleanup_error.is_none() => { + state.active_scene = None; + state.save(root)?; + bail!("{target_message}") + } + None => { + state.active_scene = None; + state.save(root)?; + let cleanup_error = cleanup_error.expect("guarded by match condition"); + bail!("{target_message}; cleanup also failed: {cleanup_error:#}") + } + } + } + } +} + +fn stop_all_owned(root: &Path) -> Result<()> { + let mut state = State::load_checked(root)?; + let owned: Vec<(String, Proc)> = state + .procs + .iter() + .filter(|(_, process)| process.owned_alive()) + .map(|(id, process)| (id.clone(), process.clone())) + .collect(); + for (id, process) in owned { + proc::stop_owned(&process).with_context(|| format!("cleaning up '{id}'"))?; + state.procs.remove(&id); + state.save(root)?; + } + Ok(()) +} + +pub fn resume(root: &Path) -> Result<()> { + let state = State::load_checked(root)?; + let desired = state + .desired_scene + .clone() + .or_else(|| state.last_known_good_scene.clone()) + .context("no desired Scene is persisted; activate or adopt one first")?; + let fallback = state.last_known_good_scene.clone(); + + match activate(root, &desired, false) { + Ok(()) => Ok(()), + Err(desired_error) => { + let Some(fallback) = fallback.filter(|fallback| fallback != &desired) else { + return Err(desired_error).context("resuming desired Scene"); + }; + eprintln!( + "desired Scene '{desired}' did not resume; trying last-known-good '{fallback}'" + ); + activate(root, &fallback, false).with_context(|| { + format!( + "desired Scene '{desired}' failed ({desired_error:#}) and fallback '{fallback}' failed" + ) + }) + } + } +} + +pub fn deactivate(root: &Path) -> Result<()> { + let _lock = TransitionLock::acquire(root)?; + let mut state = State::load_checked(root)?; + let ids: Vec = state.procs.keys().cloned().collect(); + for id in ids { + let process = state.procs[&id].clone(); + if process.owned_alive() { + println!(" stopping {id} (pid {})", process.pid); + proc::stop_owned(&process)?; + } + state.procs.remove(&id); + state.save(root)?; + } + state.desired_scene = None; + state.active_scene = None; + state.transition_scene = None; + state.last_error = None; + state.save(root)?; + println!("all Compute-managed models stopped; no Scene is desired"); + Ok(()) +} + +/// Diff the target Scene against what is actually serving. Pure: it decides +/// *what* would change, never *whether* the change is allowed. +fn plan_transition(registry: &Registry, scene: &Scene) -> Plan { + let target: HashSet<&str> = scene.models.iter().map(String::as_str).collect(); + let running = governor::running_ids(registry); + let stop: Vec = running + .iter() + .filter(|id| !target.contains(id.as_str())) + .cloned() + .collect(); + let mut start: Vec = scene + .models + .iter() + .filter(|id| !governor::is_running(®istry.models[*id])) + .cloned() + .collect(); + let listed = scene + .activation + .as_ref() + .and_then(|activation| activation.order.as_deref()) + .map(|order| order == "listed") + .unwrap_or(false); + if !listed { + start.sort_by(|a, b| { + registry.models[a] + .footprint_gb + .partial_cmp(®istry.models[b].footprint_gb) + .unwrap() + }); + } + Plan { + scene: scene.metadata.name.clone(), + budget_gb: scene.budget_gb.unwrap_or(governor::DEFAULT_BUDGET_GB), + stop, + start, + } +} + +/// Everything that must hold before the first process is signalled. Runs to +/// completion with nothing mutated, so a rejection here leaves the currently +/// active Scene exactly as it was. +fn preflight(registry: &Registry, scene: &Scene, plan: &Plan, state: &State) -> Result<()> { + for id in &scene.models { + if governor::is_running(®istry.models[id]) { + let process = state.procs.get(id).with_context(|| { + format!( + "'{id}' is already serving but is not identity-owned by Compute; adopt the active Scene first" + ) + })?; + if !process.owned_alive() { + bail!( + "ownership record for serving model '{id}' is stale; adopt the active Scene first" + ); + } + } + } + + for id in &plan.stop { + let process = state.procs.get(id).with_context(|| { + format!( + "'{id}' is serving but is not identity-owned by Compute; adopt the active Scene before switching" + ) + })?; + if !process.owned_alive() { + bail!("ownership record for serving model '{id}' is stale; refusing to signal its pid"); + } + } + for id in &plan.start { + let model = ®istry.models[id]; + if let Some(port) = model.serve.port { + if governor::port_open(port) && !governor::is_running(model) { + bail!("port {port} is occupied by a different model; refusing to start '{id}'"); + } + } + } + Ok(()) +} + +/// `scene activate --dry-run` as data rather than as printed lines: the same +/// validation, the same plan, nothing written. Callers that need the plan +/// programmatically use this instead of scraping stdout. +pub fn plan(root: &Path, name: &str) -> Result { + let _lock = TransitionLock::acquire(root)?; + let registry = Registry::load(root)?; + let scene = find_scene(root, name)?; + validate_scene(®istry, &scene)?; + let plan = plan_transition(®istry, &scene); + let mut state = State::load_checked(root)?; + state.procs.retain(|_, process| process.owned_alive()); + preflight(®istry, &scene, &plan, &state)?; + Ok(plan) +} + +fn activate_once(root: &Path, name: &str, dry_run: bool) -> Result<()> { + let registry = Registry::load(root)?; + let scene = find_scene(root, name)?; + validate_scene(®istry, &scene)?; + let plan = plan_transition(®istry, &scene); + + println!("activate '{name}' (budget {:.0} GB)", plan.budget_gb); + println!(" stop : {}", format_ids(&plan.stop)); + println!(" start: {}", format_ids(&plan.start)); + + let mut state = State::load_checked(root)?; + state.procs.retain(|_, process| process.owned_alive()); + preflight(®istry, &scene, &plan, &state)?; + + if dry_run { + println!(" dry run: validation passed; nothing changed"); + return Ok(()); + } + + state.transition_scene = Some(name.to_string()); + state.save(root)?; + + for id in &plan.stop { + let process = state.procs[id].clone(); + println!(" stopping {id} (pid {})", process.pid); + proc::stop_owned(&process)?; + state.procs.remove(id); + state.save(root)?; + } + + let mut committed: f64 = scene + .models + .iter() + .filter(|id| governor::is_running(®istry.models[*id])) + .map(|id| registry.models[id].footprint_gb) + .sum(); + let wait_healthy = scene + .activation + .as_ref() + .and_then(|activation| activation.wait_healthy) + .unwrap_or(true); + + for id in &plan.start { + let model: &Model = ®istry.models[id]; + if !governor::can_admit(model.footprint_gb, committed, plan.budget_gb) { + bail!( + "'{id}' would exceed the {:.0} GB Scene budget with the safety margin", + plan.budget_gb + ); + } + let pid = proc::spawn(root, id, model)?; + state.seq += 1; + let process = Proc::capture(pid, state.seq, model.serve.port) + .with_context(|| format!("capturing ownership for newly started '{id}'"))?; + state.procs.insert(id.clone(), process.clone()); + state.save(root)?; + committed += model.footprint_gb; + println!(" started {id} (pid {pid}); waiting for exact health"); + if wait_healthy && !governor::wait_healthy(model, health_timeout()) { + let _ = proc::stop_owned(&process); + state.procs.remove(id); + state.save(root)?; + bail!("'{id}' did not report its exact health marker before timeout"); + } + } + + let unhealthy: Vec = scene + .models + .iter() + .filter(|id| !governor::is_running(®istry.models[*id])) + .cloned() + .collect(); + if !unhealthy.is_empty() { + bail!( + "Scene '{name}' is incomplete; exact health failed for: {}", + unhealthy.join(", ") + ); + } + Ok(()) +} + +fn validate_scene(registry: &Registry, scene: &Scene) -> Result<()> { + let missing: Vec<&String> = scene + .models + .iter() + .filter(|id| !registry.models.contains_key(*id)) + .collect(); + if !missing.is_empty() { + bail!( + "Scene '{}' references unknown model id(s): {}", + scene.metadata.name, + missing + .iter() + .map(|id| id.as_str()) + .collect::>() + .join(", ") + ); + } + let budget = scene.budget_gb.unwrap_or(governor::DEFAULT_BUDGET_GB); + let footprint: f64 = scene + .models + .iter() + .map(|id| registry.models[id].footprint_gb) + .sum(); + if footprint + governor::SAFETY_MARGIN_GB > budget { + bail!( + "Scene '{}' needs {:.1} GB including safety margin, above its {:.1} GB budget", + scene.metadata.name, + footprint + governor::SAFETY_MARGIN_GB, + budget + ); + } + Ok(()) +} + +fn health_timeout() -> Duration { + Duration::from_secs(if cfg!(test) { 5 } else { 900 }) +} + +fn format_ids(ids: &[String]) -> String { + if ids.is_empty() { + "(none)".to_string() + } else { + ids.join(", ") + } +} + +#[cfg(test)] +mod tests { + use super::*; + use std::net::TcpListener; + use std::path::PathBuf; + use std::time::{SystemTime, UNIX_EPOCH}; + + fn fixture_root() -> (PathBuf, u16) { + let unique = SystemTime::now() + .duration_since(UNIX_EPOCH) + .unwrap() + .as_nanos(); + let root = std::env::temp_dir().join(format!("lumbridge-compute-{unique}")); + fs::create_dir_all(root.join("registry")).unwrap(); + fs::create_dir_all(root.join("scenes")).unwrap(); + let listener = TcpListener::bind("127.0.0.1:0").unwrap(); + let port = listener.local_addr().unwrap().port(); + drop(listener); + let bad_listener = TcpListener::bind("127.0.0.1:0").unwrap(); + let bad_port = bad_listener.local_addr().unwrap().port(); + drop(bad_listener); + let registry = format!( + "apiVersion: lumbridge/v1\nmodels:\n fake:\n name: Fake\n footprint_gb: 1\n health: http://localhost:{port}/\n serve:\n kind: exec\n port: {port}\n command: [/usr/bin/python3, -m, http.server, '{port}', --bind, 127.0.0.1]\n bad:\n name: Bad\n footprint_gb: 2\n health: http://localhost:{bad_port}/\n serve:\n kind: exec\n port: {bad_port}\n command: [/usr/bin/false]\n" + ); + fs::write(root.join("registry/models.yaml"), registry).unwrap(); + fs::write( + root.join("scenes/test.scene.yaml"), + "apiVersion: lumbridge/v1\nmetadata:\n name: test\n version: 1\nmodels: [fake]\nbudget_gb: 100\n", + ) + .unwrap(); + (root, port) + } + + #[test] + fn activation_persists_and_deactivation_stops_owned_process() { + let (root, _port) = fixture_root(); + activate(&root, "test", false).unwrap(); + let state = State::load_checked(&root).unwrap(); + assert_eq!(state.desired_scene.as_deref(), Some("test")); + assert_eq!(state.active_scene.as_deref(), Some("test")); + assert!(state.procs["fake"].owned_alive()); + deactivate(&root).unwrap(); + assert!(State::load_checked(&root).unwrap().procs.is_empty()); + fs::remove_dir_all(root).unwrap(); + } + + #[test] + fn already_serving_scene_requires_explicit_adoption() { + let (root, port) = fixture_root(); + let registry = Registry::load(&root).unwrap(); + let model = ®istry.models["fake"]; + let pid = proc::spawn(&root, "fake", model).unwrap(); + assert!(governor::wait_healthy(model, Duration::from_secs(5))); + let error = activate(&root, "test", true).unwrap_err().to_string(); + assert!(error.contains("adopt the active Scene")); + let owned = Proc::capture(pid, 1, Some(port)).unwrap(); + proc::stop_owned(&owned).unwrap(); + fs::remove_dir_all(root).unwrap(); + } + + #[test] + fn preflight_rejection_preserves_healthy_active_scene() { + let (root, _port) = fixture_root(); + activate(&root, "test", false).unwrap(); + let before = State::load_checked(&root).unwrap(); + let pid = before.procs["fake"].pid; + fs::write( + root.join("scenes/invalid.scene.yaml"), + "apiVersion: lumbridge/v1\nmetadata:\n name: invalid\n version: 1\nmodels: [missing]\nbudget_gb: 100\n", + ) + .unwrap(); + assert!(activate(&root, "invalid", false).is_err()); + let after = State::load_checked(&root).unwrap(); + assert_eq!(after.active_scene.as_deref(), Some("test")); + assert_eq!(after.desired_scene.as_deref(), Some("test")); + assert_eq!(after.procs["fake"].pid, pid); + assert!(after.procs["fake"].owned_alive()); + deactivate(&root).unwrap(); + fs::remove_dir_all(root).unwrap(); + } + + #[test] + fn failed_activation_cleans_up_partial_scene() { + let (root, port) = fixture_root(); + fs::write( + root.join("scenes/failing.scene.yaml"), + "apiVersion: lumbridge/v1\nmetadata:\n name: failing\n version: 1\nmodels: [fake, bad]\nbudget_gb: 100\n", + ) + .unwrap(); + assert!(activate(&root, "failing", false).is_err()); + let state = State::load_checked(&root).unwrap(); + assert!(state.procs.is_empty()); + assert!(state.active_scene.is_none()); + assert!(!governor::port_open(port)); + fs::remove_dir_all(root).unwrap(); + } + + #[test] + fn checked_state_load_rejects_malformed_yaml() { + let (root, _port) = fixture_root(); + fs::create_dir_all(root.join(".kuda")).unwrap(); + fs::write(root.join(".kuda/state.yaml"), "desired_scene: [").unwrap(); + assert!(State::load_checked(&root).is_err()); + fs::remove_dir_all(root).unwrap(); + } + + #[test] + fn state_write_replaces_complete_yaml_atomically() { + let (root, _port) = fixture_root(); + let state = State { + desired_scene: Some("test".to_string()), + ..State::default() + }; + state.save(&root).unwrap(); + let loaded = State::load_checked(&root).unwrap(); + assert_eq!(loaded.desired_scene.as_deref(), Some("test")); + fs::remove_dir_all(root).unwrap(); + } +} diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..c8f3f0d --- /dev/null +++ b/src/main.rs @@ -0,0 +1,388 @@ +//! Lumbridge Compute — safe AI workload orchestration for accelerator nodes. + +mod agent; +mod config; +mod eval; +mod gateway; +mod governor; +mod lifecycle; +mod mcp; +mod mem; +mod proc; + +use anyhow::Result; +use clap::{Parser, Subcommand}; +use std::path::{Path, PathBuf}; +use std::time::Duration; + +use config::{find_scene, load_scenes, Registry, Scene}; +use proc::State; + +#[derive(Parser)] +#[command( + name = "lumbridge-compute", + version, + about = "Lumbridge Compute — safe AI workload orchestration for accelerator nodes." +)] +struct Cli { + /// Root dir containing registry/ and scenes/ (default: $LUMBRIDGE_COMPUTE_ROOT, $KUDA_ROOT, or current dir) + #[arg(long, global = true)] + root: Option, + #[command(subcommand)] + cmd: Cmd, +} + +#[derive(Subcommand)] +enum Cmd { + /// Governor status: memory, budget, running set, headroom + Status, + /// Manage the model registry + Model { + #[command(subcommand)] + cmd: ModelCmd, + }, + /// Manage scenes (bundles of models) + Scene { + #[command(subcommand)] + cmd: SceneCmd, + }, + /// Run reproducible capability and serving-performance evaluations + Eval { + #[command(subcommand)] + cmd: EvalCmd, + }, + /// Run the memory watchdog in the foreground (kills the newest model before OOM-wedge) + Watchdog { + /// Kill the newest model if MemAvailable dips below this many GB + #[arg(long, default_value_t = governor::WATCHDOG_FLOOR_GB)] + floor: f64, + }, + /// Run the stable streaming gateway in the foreground + Gateway { + #[arg(long, default_value = "127.0.0.1:8011")] + listen: String, + #[arg(long, default_value = "127.0.0.1:8001")] + upstream: String, + }, + /// Serve the Governor to AI agents as MCP tools over stdio + Mcp { + /// Let an agent perform a real Scene transition, not just plan one. + /// Off by default: the agent writes its own tool arguments, so the only + /// meaningful gate on a production switch is one the operator sets here. + #[arg(long)] + allow_activate: bool, + }, + /// Run the resident supervisor: resume desired Scene, gateway, and memory floor + Agent { + #[arg(long, default_value = "127.0.0.1:8011")] + listen: String, + #[arg(long, default_value = "127.0.0.1:8001")] + upstream: String, + #[arg(long, default_value_t = governor::WATCHDOG_FLOOR_GB)] + floor: f64, + }, +} + +#[derive(Subcommand)] +enum ModelCmd { + /// List registered models and their live state + Ls, +} + +#[derive(Subcommand)] +enum SceneCmd { + /// List scenes with total footprint + Ls, + /// Show a scene: models, footprints, and the Governor's admission verdict + Show { name: String }, + /// Activate a scene: stop what's not in it, admit + start what is + Activate { + name: String, + /// Print the plan without changing anything + #[arg(long)] + dry_run: bool, + }, + /// Adopt an already-running exact Scene and bind legacy PIDs to process identities + Adopt { name: String }, + /// Resume the persisted desired Scene, falling back to the previous known-good Scene + Resume, + /// Stop all Lumbridge Compute-managed models + Deactivate, +} + +#[derive(Subcommand)] +enum EvalCmd { + /// List available evaluation suites + Ls, + /// Run a suite against an OpenAI-compatible endpoint + Run { + suite: String, + #[arg(long, default_value = "http://127.0.0.1:8001/v1")] + base_url: String, + #[arg(long, default_value = "brain")] + model: String, + /// Override the suite's repetitions per case + #[arg(long)] + repeat: Option, + }, +} + +fn root_dir(cli: &Cli) -> PathBuf { + cli.root + .clone() + .or_else(|| { + std::env::var("LUMBRIDGE_COMPUTE_ROOT") + .ok() + .map(PathBuf::from) + }) + .or_else(|| std::env::var("KUDA_ROOT").ok().map(PathBuf::from)) + .unwrap_or_else(|| PathBuf::from(".")) +} + +fn main() -> Result<()> { + let cli = Cli::parse(); + let root = root_dir(&cli); + match &cli.cmd { + Cmd::Status => cmd_status(&root), + Cmd::Model { cmd } => match cmd { + ModelCmd::Ls => cmd_model_ls(&root), + }, + Cmd::Scene { cmd } => match cmd { + SceneCmd::Ls => cmd_scene_ls(&root), + SceneCmd::Show { name } => cmd_scene_show(&root, name), + SceneCmd::Activate { name, dry_run } => lifecycle::activate(&root, name, *dry_run), + SceneCmd::Adopt { name } => lifecycle::adopt(&root, name), + SceneCmd::Resume => lifecycle::resume(&root), + SceneCmd::Deactivate => lifecycle::deactivate(&root), + }, + Cmd::Eval { cmd } => match cmd { + EvalCmd::Ls => eval::list(&root), + EvalCmd::Run { + suite, + base_url, + model, + repeat, + } => eval::run(&root, suite, base_url, model, *repeat), + }, + Cmd::Watchdog { floor } => cmd_watchdog(&root, *floor), + Cmd::Gateway { listen, upstream } => gateway::run(listen, upstream), + Cmd::Mcp { allow_activate } => mcp::run(&root, *allow_activate), + Cmd::Agent { + listen, + upstream, + floor, + } => agent::run(&root, listen, upstream, *floor), + } +} + +fn cmd_status(root: &Path) -> Result<()> { + let reg = Registry::load(root)?; + let m = mem::read()?; + let committed = governor::committed_gb(®); + let running = governor::running_ids(®); + let budget = governor::DEFAULT_BUDGET_GB; + let headroom = (budget - committed - governor::SAFETY_MARGIN_GB).max(0.0); + let managed = State::load_checked(root)?; + + println!("Lumbridge Compute · governor"); + println!( + " memory {:.1} GB total · {:.1} GB available", + m.total_gb, m.available_gb + ); + println!( + " budget {:.0} GB (safety margin {:.0} · watchdog floor {:.0})", + budget, + governor::SAFETY_MARGIN_GB, + governor::WATCHDOG_FLOOR_GB + ); + println!( + " committed {committed:.1} GB across {} model(s)", + running.len() + ); + println!(" headroom {headroom:.1} GB admittable\n"); + println!( + " scene active={} desired={} fallback={}", + managed.active_scene.as_deref().unwrap_or("-"), + managed.desired_scene.as_deref().unwrap_or("-"), + managed.last_known_good_scene.as_deref().unwrap_or("-") + ); + if let Some(error) = &managed.last_error { + println!(" last error {error}"); + } + + if running.is_empty() { + println!(" (no registered models currently serving)"); + } else { + println!(" running:"); + for id in &running { + let mdl = ®.models[id]; + let tag = if managed + .procs + .get(id) + .is_some_and(|process| process.owned_alive()) + { + "compute" + } else { + "ext " + }; + println!( + " ● [{tag}] {:<12} {:>5.0} GB :{:<5} {}", + id, + mdl.footprint_gb, + port_str(mdl.serve.port), + mdl.name + ); + } + } + Ok(()) +} + +fn cmd_model_ls(root: &Path) -> Result<()> { + let reg = Registry::load(root)?; + println!( + "{:<12} {:>6} {:<6} {:<6} MODEL", + "ID", "GB", "STATE", "PORT" + ); + for (id, m) in ®.models { + println!( + "{:<12} {:>6.0} {:<6} {:<6} {}", + id, + m.footprint_gb, + if governor::is_running(m) { + "up" + } else { + "down" + }, + port_str(m.serve.port), + m.name + ); + } + Ok(()) +} + +fn cmd_scene_ls(root: &Path) -> Result<()> { + let reg = Registry::load(root)?; + let scenes = load_scenes(root)?; + if scenes.is_empty() { + println!("no scenes in {}/scenes", root.display()); + return Ok(()); + } + println!("{:<12} {:>6} {:<30} MODELS", "SCENE", "GB", "DESCRIPTION"); + for s in &scenes { + let total = scene_footprint(s, ®); + println!( + "{:<12} {:>6.0} {:<30} {}", + s.metadata.name, + total, + truncate(&s.metadata.description, 30), + s.models.join(", ") + ); + } + Ok(()) +} + +fn cmd_scene_show(root: &Path, name: &str) -> Result<()> { + let reg = Registry::load(root)?; + let scene = find_scene(root, name)?; + let budget = scene.budget_gb.unwrap_or(governor::DEFAULT_BUDGET_GB); + + println!( + "scene {} (v{})", + scene.metadata.name, scene.metadata.version + ); + if !scene.metadata.description.is_empty() { + println!(" {}", scene.metadata.description); + } + println!(" budget {budget:.0} GB\n models:"); + + let mut total = 0.0; + let mut missing = Vec::new(); + for id in &scene.models { + match reg.models.get(id) { + Some(m) => { + total += m.footprint_gb; + let state = if governor::is_running(m) { + "up" + } else { + "down" + }; + println!( + " {:<12} {:>5.0} GB [{:<4}] {}", + id, m.footprint_gb, state, m.name + ); + } + None => { + missing.push(id.clone()); + println!(" {id:<12} ? [MISSING from registry]"); + } + } + } + + let needed = total + governor::SAFETY_MARGIN_GB; + println!( + "\n total footprint {total:.1} GB (+{:.0} safety = {needed:.1} GB)", + governor::SAFETY_MARGIN_GB + ); + let verdict = if !missing.is_empty() { + format!("✗ {} model(s) missing from registry", missing.len()) + } else if needed <= budget { + format!("✓ fits — {:.1} GB to spare", budget - needed) + } else { + format!("✗ exceeds budget by {:.1} GB", needed - budget) + }; + println!(" admission {verdict}"); + Ok(()) +} + +fn cmd_watchdog(root: &Path, floor: f64) -> Result<()> { + println!( + "Lumbridge Compute watchdog — killing the newest model if MemAvailable < {floor:.1} GB. Ctrl-C to stop." + ); + loop { + let m = mem::read()?; + if m.available_gb < floor { + let mut state = State::load_checked(root)?; + match state.newest_alive() { + Some((id, p)) => { + eprintln!( + "watchdog: MemAvailable {:.1} GB < floor {:.1} — killing newest '{id}' (pid {})", + m.available_gb, floor, p.pid + ); + proc::stop_owned(&p)?; + state.procs.remove(&id); + state.save(root)?; + } + None => eprintln!( + "watchdog: MemAvailable {:.1} GB < floor {:.1} but no Lumbridge Compute-managed model to kill!", + m.available_gb, floor + ), + } + } + std::thread::sleep(Duration::from_secs(1)); + } +} + +// ---- helpers --------------------------------------------------------------- + +fn scene_footprint(s: &Scene, reg: &Registry) -> f64 { + s.models + .iter() + .filter_map(|id| reg.models.get(id)) + .map(|m| m.footprint_gb) + .sum() +} + +fn port_str(p: Option) -> String { + p.map(|p| p.to_string()).unwrap_or_else(|| "-".to_string()) +} + +fn truncate(s: &str, n: usize) -> String { + if s.chars().count() <= n { + s.to_string() + } else { + format!( + "{}…", + s.chars().take(n.saturating_sub(1)).collect::() + ) + } +} diff --git a/src/mcp.rs b/src/mcp.rs new file mode 100644 index 0000000..66501a3 --- /dev/null +++ b/src/mcp.rs @@ -0,0 +1,609 @@ +//! MCP server: the Governor's surface, exposed to agents as tools. +//! +//! Agents already drive Compute by shelling out to the CLI and scraping the +//! column-aligned output. That works until a column moves. Speaking MCP means +//! the agent gets the same numbers the Governor reasons about, as data, with a +//! schema attached — and it means the *shape* of what an agent may do becomes +//! something this file decides rather than something `bash` decides. +//! +//! Two deliberate constraints shape everything below. +//! +//! **Read-first.** Every tool here except `scene_activate` is a pure read. +//! Activating a Scene stops every registered model that is not in it, which on +//! this box means taking down whatever is currently serving — a live voice +//! pipeline included. There is no undo an agent can reach for: if the target +//! Scene then fails to come up, recovery depends on rollback that may itself +//! fail. That asymmetry is why `scene adopt`, `scene resume`, and +//! `scene deactivate` are absent entirely; they are operator verbs whose +//! correctness depends on knowing what the box was doing five minutes ago. +//! `scene_activate` is exposed because planning a switch is genuinely the +//! useful thing an agent wants, and it defaults to planning only. +//! +//! **The safety boundary is the operator's, not the agent's.** A `dry_run` +//! argument defaulting to `true` documents intent but guards nothing: the agent +//! writes the arguments, so it can write `false`. The only boundary an agent +//! cannot cross is one set before it connects, so a real transition also +//! requires `lumbridge-compute mcp --allow-activate`, chosen by the human who +//! launched the server. Without that flag `dry_run: false` is refused, and the +//! refusal says so rather than silently planning instead. + +use anyhow::{Context, Result}; +use rmcp::handler::server::router::tool::ToolRouter; +use rmcp::handler::server::wrapper::Parameters; +use rmcp::model::{Implementation, ServerCapabilities, ServerInfo}; +use rmcp::{tool, tool_handler, tool_router, ErrorData, Json, ServerHandler, ServiceExt}; +use schemars::JsonSchema; +use serde::{Deserialize, Serialize}; +use std::os::fd::FromRawFd; +use std::path::{Path, PathBuf}; +use std::sync::Arc; + +use crate::config::{find_scene, load_scenes, Registry}; +use crate::proc::State; +use crate::{eval, governor, lifecycle, mem}; + +pub fn run(root: &Path, allow_activate: bool) -> Result<()> { + let transport_stdout = hand_over_stdout()?; + // The banner has to go to stderr for the same reason everything else does; + // it doubles as confirmation to the operator that the mutating tool is off. + eprintln!( + "Lumbridge Compute MCP server on stdio · root {} · scene activation {}", + root.display(), + if allow_activate { + "ENABLED (--allow-activate)" + } else { + "disabled; plan only" + } + ); + + let server = ComputeMcp::new(root.to_path_buf(), allow_activate); + let runtime = tokio::runtime::Builder::new_current_thread() + .enable_all() + .build() + .context("building the MCP runtime")?; + runtime.block_on(async move { + let transport = ( + tokio::io::stdin(), + tokio::fs::File::from_std(transport_stdout), + ); + let service = server + .serve(transport) + .await + .context("negotiating the MCP stdio session")?; + service.waiting().await.context("serving MCP over stdio")?; + Ok(()) + }) +} + +/// Hand the real stdout to the transport and point fd 1 at stderr. +/// +/// On stdio transport fd 1 *is* the JSON-RPC framing, and this crate reports +/// progress with `println!` throughout — `lifecycle::activate` narrates every +/// stop and start. One such line interleaved into the framing desynchronises +/// the client mid-transition, which is the worst possible moment to lose it. +/// Rather than audit every print (and every future one), move the file +/// descriptor: library output lands on stderr, where operators already read +/// this server's logs, and the protocol gets a channel nothing else can write. +fn hand_over_stdout() -> Result { + let saved = unsafe { libc::dup(libc::STDOUT_FILENO) }; + if saved < 0 { + return Err(std::io::Error::last_os_error()) + .context("duplicating stdout for the MCP transport"); + } + if unsafe { libc::dup2(libc::STDERR_FILENO, libc::STDOUT_FILENO) } < 0 { + let error = std::io::Error::last_os_error(); + unsafe { libc::close(saved) }; + return Err(error).context("redirecting stdout to stderr"); + } + // SAFETY: `saved` is a fresh descriptor from `dup` that nothing else owns. + Ok(unsafe { std::fs::File::from_raw_fd(saved) }) +} + +#[derive(Clone)] +struct ComputeMcp { + root: Arc, + allow_activate: bool, + tool_router: ToolRouter, +} + +#[tool_router] +impl ComputeMcp { + fn new(root: PathBuf, allow_activate: bool) -> Self { + Self { + root: Arc::new(root), + allow_activate, + tool_router: Self::tool_router(), + } + } + + /// Governor status for this node: unified-memory totals, the hard budget + /// and its margins, how much is committed by models that are actually + /// serving, how much is still admittable, the persisted Scene state, and + /// the last transition or watchdog error. Read this before reasoning about + /// whether anything else will fit. + #[tool( + name = "governor_status", + annotations( + title = "Governor status", + read_only_hint = true, + open_world_hint = false + ) + )] + async fn governor_status(&self) -> Result, ErrorData> { + let root = self.root.clone(); + offload(move || collect_status(&root)).await.map(Json) + } + + /// List every model in the node's registry with its declared worst-case + /// footprint, serving port, and whether it is currently serving. Footprints + /// are what admission control is decided against, not observed usage. + #[tool( + name = "model_list", + annotations( + title = "List registered models", + read_only_hint = true, + open_world_hint = false + ) + )] + async fn model_list(&self) -> Result, ErrorData> { + let root = self.root.clone(); + offload(move || collect_models(&root)).await.map(Json) + } + + /// List the Scenes this node can activate, with each one's total footprint + /// and member models. A Scene is a named set of models brought up as a + /// single unit. + #[tool( + name = "scene_list", + annotations(title = "List scenes", read_only_hint = true, open_world_hint = false) + )] + async fn scene_list(&self) -> Result, ErrorData> { + let root = self.root.clone(); + offload(move || collect_scenes(&root)).await.map(Json) + } + + /// Show one Scene: its models, their footprints and live state, and the + /// Governor's admission verdict — whether the Scene fits its budget once + /// the safety margin is added, and by how much it fits or misses. + #[tool( + name = "scene_show", + annotations( + title = "Show a scene and its admission verdict", + read_only_hint = true, + open_world_hint = false + ) + )] + async fn scene_show( + &self, + Parameters(params): Parameters, + ) -> Result, ErrorData> { + let root = self.root.clone(); + offload(move || collect_scene(&root, ¶ms.name)) + .await + .map(Json) + } + + /// List the evaluation suites available on this node, with their versions + /// and case counts. Running a suite is deliberately not exposed: it drives + /// real load against a serving model for an unbounded time. + #[tool( + name = "eval_list", + annotations( + title = "List eval suites", + read_only_hint = true, + open_world_hint = false + ) + )] + async fn eval_list(&self) -> Result, ErrorData> { + let root = self.root.clone(); + offload(move || collect_evals(&root)).await.map(Json) + } + + /// Plan — or, if the operator allowed it, perform — a Scene transition. + /// + /// With `dry_run` true (the default) this runs every check that guards a + /// real transition and returns the models it would stop and start, changing + /// nothing. With `dry_run` false it actually switches the node: models + /// outside the Scene are stopped, which will interrupt anything they serve, + /// and the call blocks until every Scene model reports healthy or the + /// transition rolls back. A real transition additionally requires the + /// server to have been started with `--allow-activate`; without it, + /// `dry_run: false` is refused. Ask a human before setting it. + #[tool( + name = "scene_activate", + annotations( + title = "Activate a scene (plans by default)", + read_only_hint = false, + destructive_hint = true, + idempotent_hint = false, + open_world_hint = false + ) + )] + async fn scene_activate( + &self, + Parameters(params): Parameters, + ) -> Result, ErrorData> { + if !params.dry_run && !self.allow_activate { + return Err(ErrorData::invalid_params( + "this MCP server is running plan-only: a real Scene transition needs an \ + operator to restart it as `lumbridge-compute mcp --allow-activate`. \ + Re-run with dry_run: true to see the plan.", + None, + )); + } + let root = self.root.clone(); + offload(move || activate_scene(&root, ¶ms.name, params.dry_run)) + .await + .map(Json) + } +} + +#[tool_handler(router = self.tool_router)] +impl ServerHandler for ComputeMcp { + fn get_info(&self) -> ServerInfo { + ServerInfo::new(ServerCapabilities::builder().enable_tools().build()) + .with_server_info(Implementation::new( + "lumbridge-compute", + env!("CARGO_PKG_VERSION"), + )) + .with_instructions( + "Lumbridge Compute runs many AI models on one unified-memory box. There is a \ + single memory pool shared by CPU and GPU, so over-committing does not fail \ + gracefully — the machine thrashes and wedges before the OOM killer acts. The \ + Governor prevents that by admitting a model only if its declared footprint \ + plus a safety margin still fits a hard budget.\n\n\ + Start from `governor_status` for what is committed and what is admittable, \ + and `scene_show` for whether a named Scene would be admitted. Everything is \ + read-only except `scene_activate`, which plans by default. Activating a Scene \ + stops every registered model outside it, so treat it as a production change \ + and get a human's agreement before asking for a non-dry run.", + ) + } +} + +// ---- tool parameters ------------------------------------------------------- + +#[derive(Debug, Deserialize, JsonSchema)] +struct SceneNameParams { + /// Scene name, as reported by `scene_list`. + name: String, +} + +#[derive(Debug, Deserialize, JsonSchema)] +struct SceneActivateParams { + /// Scene name, as reported by `scene_list`. + name: String, + /// Validate and report the plan without changing anything. Defaults to + /// true; set it to false only with a human's explicit agreement. + #[serde(default = "yes")] + dry_run: bool, +} + +fn yes() -> bool { + true +} + +// ---- tool results ---------------------------------------------------------- +// +// Lists are wrapped in objects rather than returned bare: MCP structured +// content must be a JSON object, and a named field leaves room to report +// alongside the list later without breaking a client's schema. + +#[derive(Debug, Serialize, JsonSchema)] +struct StatusReport { + memory_total_gb: f64, + memory_available_gb: f64, + budget_gb: f64, + safety_margin_gb: f64, + watchdog_floor_gb: f64, + /// Sum of the footprints of every registered model currently serving. + committed_gb: f64, + /// What a new model could still claim without breaching the safety margin. + headroom_gb: f64, + /// Scene whose exact model health was last verified. + active_scene: Option, + /// Scene the node should return to after a restart. + desired_scene: Option, + /// Previous proven Scene, used if the desired one cannot resume. + last_known_good_scene: Option, + last_error: Option, + running: Vec, +} + +#[derive(Debug, Serialize, JsonSchema)] +struct RunningModel { + id: String, + name: String, + footprint_gb: f64, + port: Option, + /// True when Compute owns this process identity and may signal it. False + /// means the model is serving but was started outside Compute, so a Scene + /// transition will refuse to touch it until it is adopted. + compute_owned: bool, +} + +#[derive(Debug, Serialize, JsonSchema)] +struct ModelList { + models: Vec, +} + +#[derive(Debug, Serialize, JsonSchema)] +struct ModelEntry { + id: String, + name: String, + /// Declared worst-case unified memory once serving, not observed usage. + footprint_gb: f64, + port: Option, + running: bool, +} + +#[derive(Debug, Serialize, JsonSchema)] +struct SceneList { + scenes: Vec, +} + +#[derive(Debug, Serialize, JsonSchema)] +struct SceneEntry { + name: String, + version: u32, + description: String, + /// Total footprint of the Scene's models that exist in the registry. + footprint_gb: f64, + models: Vec, +} + +#[derive(Debug, Serialize, JsonSchema)] +struct SceneDetail { + name: String, + version: u32, + description: String, + budget_gb: f64, + models: Vec, + /// Model ids the Scene references that the registry does not define. + missing_models: Vec, + footprint_gb: f64, + /// Footprint plus the Governor's safety margin — the figure compared + /// against the budget. + required_gb: f64, + /// The Governor's verdict: would this Scene be admitted? + admits: bool, + verdict: String, +} + +#[derive(Debug, Serialize, JsonSchema)] +struct SceneModel { + id: String, + /// Absent when the id is missing from the registry. + name: Option, + footprint_gb: Option, + running: bool, +} + +#[derive(Debug, Serialize, JsonSchema)] +struct EvalList { + suites: Vec, +} + +#[derive(Debug, Serialize, JsonSchema)] +struct EvalSuite { + name: String, + version: u32, + cases: usize, + description: String, +} + +#[derive(Debug, Serialize, JsonSchema)] +struct ActivationReport { + scene: String, + budget_gb: f64, + /// Serving models outside the Scene, which the transition stops first. + stop: Vec, + /// Scene models not yet serving, in the order they would be admitted. + start: Vec, + /// False when this was a plan and the node was left untouched. + applied: bool, +} + +// ---- collectors ------------------------------------------------------------ +// +// These compose the same primitives the CLI prints from — `governor`, `mem`, +// `config`, `proc::State` — rather than parsing the CLI's output. The numbers +// an agent sees are therefore the numbers admission control uses, by +// construction. + +fn collect_status(root: &Path) -> Result { + let registry = Registry::load(root)?; + let memory = mem::read()?; + let committed = governor::committed_gb(®istry); + let managed = State::load_checked(root)?; + let budget = governor::DEFAULT_BUDGET_GB; + + let running = governor::running_ids(®istry) + .into_iter() + .map(|id| { + let model = ®istry.models[&id]; + RunningModel { + name: model.name.clone(), + footprint_gb: model.footprint_gb, + port: model.serve.port, + compute_owned: managed + .procs + .get(&id) + .is_some_and(|process| process.owned_alive()), + id, + } + }) + .collect(); + + Ok(StatusReport { + memory_total_gb: memory.total_gb, + memory_available_gb: memory.available_gb, + budget_gb: budget, + safety_margin_gb: governor::SAFETY_MARGIN_GB, + watchdog_floor_gb: governor::WATCHDOG_FLOOR_GB, + committed_gb: committed, + headroom_gb: (budget - committed - governor::SAFETY_MARGIN_GB).max(0.0), + active_scene: managed.active_scene, + desired_scene: managed.desired_scene, + last_known_good_scene: managed.last_known_good_scene, + last_error: managed.last_error, + running, + }) +} + +fn collect_models(root: &Path) -> Result { + let registry = Registry::load(root)?; + Ok(ModelList { + models: registry + .models + .iter() + .map(|(id, model)| ModelEntry { + id: id.clone(), + name: model.name.clone(), + footprint_gb: model.footprint_gb, + port: model.serve.port, + running: governor::is_running(model), + }) + .collect(), + }) +} + +fn collect_scenes(root: &Path) -> Result { + let registry = Registry::load(root)?; + Ok(SceneList { + scenes: load_scenes(root)? + .into_iter() + .map(|scene| SceneEntry { + name: scene.metadata.name, + version: scene.metadata.version, + description: scene.metadata.description, + footprint_gb: scene + .models + .iter() + .filter_map(|id| registry.models.get(id)) + .map(|model| model.footprint_gb) + .sum(), + models: scene.models, + }) + .collect(), + }) +} + +fn collect_scene(root: &Path, name: &str) -> Result { + let registry = Registry::load(root)?; + let scene = find_scene(root, name)?; + let budget = scene.budget_gb.unwrap_or(governor::DEFAULT_BUDGET_GB); + + let mut footprint = 0.0; + let mut missing = Vec::new(); + let mut models = Vec::new(); + for id in &scene.models { + match registry.models.get(id) { + Some(model) => { + footprint += model.footprint_gb; + models.push(SceneModel { + id: id.clone(), + name: Some(model.name.clone()), + footprint_gb: Some(model.footprint_gb), + running: governor::is_running(model), + }); + } + None => { + missing.push(id.clone()); + models.push(SceneModel { + id: id.clone(), + name: None, + footprint_gb: None, + running: false, + }); + } + } + } + + // Same three-way verdict the CLI prints: a missing id is fatal regardless + // of arithmetic, because the Scene cannot be resolved at all. + let required = footprint + governor::SAFETY_MARGIN_GB; + let (admits, verdict) = if !missing.is_empty() { + ( + false, + format!("{} model(s) missing from the registry", missing.len()), + ) + } else if required <= budget { + ( + true, + format!("fits with {:.1} GB to spare", budget - required), + ) + } else { + ( + false, + format!("exceeds the budget by {:.1} GB", required - budget), + ) + }; + + Ok(SceneDetail { + name: scene.metadata.name, + version: scene.metadata.version, + description: scene.metadata.description, + budget_gb: budget, + models, + missing_models: missing, + footprint_gb: footprint, + required_gb: required, + admits, + verdict, + }) +} + +fn collect_evals(root: &Path) -> Result { + Ok(EvalList { + suites: eval::catalogue(root)? + .into_iter() + .map(|suite| EvalSuite { + name: suite.name, + version: suite.version, + cases: suite.cases, + description: suite.description, + }) + .collect(), + }) +} + +fn activate_scene(root: &Path, name: &str, dry_run: bool) -> Result { + // Plan first either way. On a real transition this is the plan we report; + // `activate` re-derives and re-validates its own under the transition lock, + // so the report describes intent and the lock still owns the truth. + let plan = lifecycle::plan(root, name)?; + if !dry_run { + lifecycle::activate(root, name, false)?; + } + Ok(ActivationReport { + scene: plan.scene, + budget_gb: plan.budget_gb, + stop: plan.stop, + start: plan.start, + applied: !dry_run, + }) +} + +/// Run a synchronous Governor call off the transport's thread. +/// +/// Every read here touches `/proc` and probes serving ports with blocking +/// socket timeouts, and a real transition can sit for minutes waiting on model +/// health. Doing that inline would stall the JSON-RPC reader for the duration, +/// so the synchronous core stays on the blocking pool where it belongs. +async fn offload(work: F) -> Result +where + F: FnOnce() -> Result + Send + 'static, + T: Send + 'static, +{ + match tokio::task::spawn_blocking(work).await { + Ok(Ok(value)) => Ok(value), + // `{:#}` keeps anyhow's context chain, which is where the actionable + // half of a Compute error lives ("adopt the active Scene first"). + Ok(Err(error)) => Err(ErrorData::internal_error(format!("{error:#}"), None)), + Err(join) => Err(ErrorData::internal_error( + format!("Compute worker task failed: {join}"), + None, + )), + } +} diff --git a/src/mem.rs b/src/mem.rs new file mode 100644 index 0000000..791952e --- /dev/null +++ b/src/mem.rs @@ -0,0 +1,37 @@ +//! Unified-memory sensing. On a shared-memory box there's one pool, so `MemAvailable` +//! from /proc/meminfo is the single source of truth the Governor guards. + +use anyhow::{Context, Result}; +use std::fs; + +pub struct MemInfo { + pub total_gb: f64, + pub available_gb: f64, +} + +pub fn read() -> Result { + let s = fs::read_to_string("/proc/meminfo").context("reading /proc/meminfo")?; + let mut total = 0.0; + let mut available = 0.0; + for line in s.lines() { + if let Some(v) = line.strip_prefix("MemTotal:") { + total = kb_to_gb(v); + } else if let Some(v) = line.strip_prefix("MemAvailable:") { + available = kb_to_gb(v); + } + } + Ok(MemInfo { + total_gb: total, + available_gb: available, + }) +} + +/// Parse a " 123456 kB" meminfo value into GB. +fn kb_to_gb(v: &str) -> f64 { + v.split_whitespace() + .next() + .and_then(|n| n.parse::().ok()) + .unwrap_or(0.0) + / 1024.0 + / 1024.0 +} diff --git a/src/proc.rs b/src/proc.rs new file mode 100644 index 0000000..99dcccf --- /dev/null +++ b/src/proc.rs @@ -0,0 +1,363 @@ +//! Process lifecycle: spawn a model in its own process group, track it in a state +//! file, and stop it (SIGTERM → SIGKILL to the whole group). The Governor decides +//! *whether* to start; this module *how*. + +use anyhow::{bail, Context, Result}; +use serde::{Deserialize, Serialize}; +use std::collections::BTreeMap; +use std::fs::{self, File, OpenOptions}; +use std::io::Write; +use std::os::unix::process::CommandExt; +use std::path::{Path, PathBuf}; +use std::process::{self, Command, Stdio}; +use std::time::Duration; + +use crate::config::Model; + +/// One Lumbridge Compute-managed process. `seq` is a monotonic launch counter so the watchdog +/// can always find the *newest* model to sacrifice first. +#[derive(Debug, Clone, Serialize, Deserialize)] +pub struct Proc { + pub pid: i32, + pub seq: u64, + pub port: Option, + /// Linux boot id plus process start ticks bind ownership to one process + /// incarnation, preventing a reused PID from ever being signalled. + #[serde(default)] + pub boot_id: Option, + #[serde(default)] + pub start_time_ticks: Option, +} + +#[derive(Debug, Default, Serialize, Deserialize)] +pub struct State { + #[serde(default)] + pub seq: u64, + #[serde(default)] + pub procs: BTreeMap, + #[serde(default)] + pub desired_scene: Option, + #[serde(default)] + pub active_scene: Option, + /// Previous proven scene used if the desired scene cannot resume. + #[serde(default)] + pub last_known_good_scene: Option, + #[serde(default)] + pub transition_scene: Option, + #[serde(default)] + pub last_error: Option, +} + +fn state_dir(root: &Path) -> PathBuf { + root.join(".kuda") +} + +impl State { + pub fn load_checked(root: &Path) -> Result { + let p = state_dir(root).join("state.yaml"); + match fs::read_to_string(&p) { + Ok(s) => serde_yaml::from_str(&s) + .with_context(|| format!("parsing persisted state {}", p.display())), + Err(error) if error.kind() == std::io::ErrorKind::NotFound => Ok(State::default()), + Err(error) => Err(error).with_context(|| format!("reading {}", p.display())), + } + } + + pub fn save(&self, root: &Path) -> Result<()> { + let dir = state_dir(root); + fs::create_dir_all(&dir)?; + let p = dir.join("state.yaml"); + let tmp = dir.join(format!(".state.yaml.{}.tmp", process::id())); + let mut file = OpenOptions::new() + .create(true) + .truncate(true) + .write(true) + .open(&tmp) + .with_context(|| format!("creating {}", tmp.display()))?; + file.write_all(serde_yaml::to_string(self)?.as_bytes())?; + file.sync_all()?; + fs::rename(&tmp, &p).with_context(|| format!("atomically replacing {}", p.display()))?; + File::open(&dir) + .with_context(|| format!("opening state directory {}", dir.display()))? + .sync_all() + .with_context(|| format!("syncing state directory {}", dir.display()))?; + Ok(()) + } + + /// Newest still-alive managed model id, if any. + pub fn newest_alive(&self) -> Option<(String, Proc)> { + self.procs + .iter() + .filter(|(_, p)| p.owned_alive()) + .max_by_key(|(_, p)| p.seq) + .map(|(id, p)| (id.clone(), p.clone())) + } +} + +#[derive(Debug)] +struct ProcessIdentity { + boot_id: String, + start_time_ticks: u64, + process_group_id: i32, + state: char, +} + +impl Proc { + /// Capture the identity of a process that Lumbridge Compute just spawned or + /// that an operator explicitly adopted from legacy state. + pub fn capture(pid: i32, seq: u64, port: Option) -> Result { + let identity = process_identity(pid)?; + if identity.process_group_id != pid { + bail!( + "refusing process {pid}: process group {} does not equal pid", + identity.process_group_id + ); + } + Ok(Proc { + pid, + seq, + port, + boot_id: Some(identity.boot_id), + start_time_ticks: Some(identity.start_time_ticks), + }) + } + + pub fn owned_alive(&self) -> bool { + self.validate_owned().is_ok() + } + + fn validate_owned(&self) -> Result<()> { + let expected_boot = self + .boot_id + .as_deref() + .context("legacy process record has no boot identity; adopt the active scene first")?; + let expected_start = self + .start_time_ticks + .context("legacy process record has no start identity; adopt the active scene first")?; + let current = process_identity(self.pid)?; + if current.boot_id != expected_boot || current.start_time_ticks != expected_start { + bail!( + "pid {} no longer identifies the process Compute started", + self.pid + ); + } + if current.state == 'Z' { + bail!("pid {} is a zombie awaiting reap", self.pid); + } + if current.process_group_id != self.pid { + bail!( + "pid {} now belongs to process group {}; refusing group signal", + self.pid, + current.process_group_id + ); + } + Ok(()) + } +} + +fn process_identity(pid: i32) -> Result { + let boot_id = fs::read_to_string("/proc/sys/kernel/random/boot_id") + .context("reading Linux boot id")? + .trim() + .to_string(); + let stat_path = format!("/proc/{pid}/stat"); + let stat = fs::read_to_string(&stat_path) + .with_context(|| format!("reading process identity {stat_path}"))?; + let (state, process_group_id, start_time_ticks) = parse_stat_identity(&stat)?; + Ok(ProcessIdentity { + boot_id, + start_time_ticks, + process_group_id, + state, + }) +} + +fn parse_stat_identity(stat: &str) -> Result<(char, i32, u64)> { + // `comm` is parenthesized and may contain spaces, so locate its final `)` + // before indexing the fields that follow it. The remainder starts at field 3. + let close = stat + .rfind(')') + .context("malformed /proc stat: missing process name terminator")?; + let fields: Vec<&str> = stat[close + 1..].split_whitespace().collect(); + let state = fields + .first() + .and_then(|value| value.chars().next()) + .context("malformed /proc stat: missing process state")?; + let process_group_id = fields + .get(2) + .context("malformed /proc stat: missing process group")? + .parse::() + .context("parsing process group id")?; + let start_time_ticks = fields + .get(19) + .context("malformed /proc stat: missing start time")? + .parse::() + .context("parsing process start time")?; + Ok((state, process_group_id, start_time_ticks)) +} + +/// Expand a leading `~/` to `$HOME`. +fn expand(s: &str) -> String { + if let Some(rest) = s.strip_prefix("~/") { + if let Ok(home) = std::env::var("HOME") { + return format!("{home}/{rest}"); + } + } + s.to_string() +} + +/// Build the launch argv for a model: an explicit `command` wins; otherwise a +/// `kind`-based builder. argv[0] is the program. +pub fn build_argv(m: &Model) -> Result> { + if !m.serve.command.is_empty() { + return Ok(m.serve.command.iter().map(|s| expand(s)).collect()); + } + match m.serve.kind.as_str() { + "vllm" => { + let executable = m + .serve + .executable + .as_deref() + .map(expand) + .unwrap_or_else(|| "vllm".to_string()); + let mut a = vec![executable, "serve".to_string()]; + if let Some(w) = &m.serve.weights { + a.push(expand(w)); + } + if !m.serve.served_name.is_empty() { + a.push("--served-model-name".into()); + a.extend(m.serve.served_name.iter().cloned()); + } + a.push("--host".into()); + a.push("0.0.0.0".into()); + if let Some(p) = m.serve.port { + a.push("--port".into()); + a.push(p.to_string()); + } + for (k, v) in &m.serve.args { + render_arg(&mut a, k, v); + } + Ok(a) + } + other => bail!( + "model '{}' has no explicit `command` and kind '{}' has no builder yet — \ + add a `command: [...]` to the registry entry", + m.name, + other + ), + } +} + +fn render_arg(out: &mut Vec, k: &str, v: &serde_yaml::Value) { + use serde_yaml::Value; + let flag = format!("--{k}"); + match v { + Value::Bool(true) => out.push(flag), + Value::Bool(false) => {} + Value::String(s) => { + out.push(flag); + out.push(s.clone()); + } + Value::Number(n) => { + out.push(flag); + out.push(n.to_string()); + } + _ => { + out.push(flag); + out.push( + serde_yaml::to_string(v) + .unwrap_or_default() + .trim() + .to_string(), + ); + } + } +} + +/// Spawn `id`'s model detached in its own process group, logs → compatibility path `.kuda/logs/.log`. +/// Returns the child pid (also its process-group id). +pub fn spawn(root: &Path, id: &str, m: &Model) -> Result { + let argv = build_argv(m)?; + let logdir = state_dir(root).join("logs"); + fs::create_dir_all(&logdir)?; + let log = File::create(logdir.join(format!("{id}.log")))?; + let errlog = log.try_clone()?; + + let mut cmd = Command::new(&argv[0]); + cmd.args(&argv[1..]) + .stdin(Stdio::null()) + .stdout(Stdio::from(log)) + .stderr(Stdio::from(errlog)) + .process_group(0); // own group → clean group-kill, immune to CLI's signals + for (k, v) in &m.serve.env { + cmd.env(k, expand(v)); + } + let mut child = cmd + .spawn() + .with_context(|| format!("spawning '{id}': {}", argv.join(" ")))?; + let pid = child.id() as i32; + // A resident agent may outlive many model processes. Reap each child when + // it exits so failed runtimes cannot accumulate as zombies under the agent. + std::thread::spawn(move || { + let _ = child.wait(); + }); + Ok(pid) +} + +/// Stop only the exact process group captured in this ownership record. +pub fn stop_owned(proc: &Proc) -> Result<()> { + if !proc.owned_alive() { + return Ok(()); + } + proc.validate_owned()?; + let term = unsafe { libc::kill(-proc.pid, libc::SIGTERM) }; + if term != 0 { + return Err(std::io::Error::last_os_error()) + .with_context(|| format!("sending SIGTERM to owned process group {}", proc.pid)); + } + for _ in 0..60 { + if !proc.owned_alive() { + return Ok(()); + } + std::thread::sleep(Duration::from_millis(100)); + } + proc.validate_owned()?; + let kill = unsafe { libc::kill(-proc.pid, libc::SIGKILL) }; + if kill != 0 { + return Err(std::io::Error::last_os_error()) + .with_context(|| format!("sending SIGKILL to owned process group {}", proc.pid)); + } + for _ in 0..20 { + if !proc.owned_alive() { + return Ok(()); + } + std::thread::sleep(Duration::from_millis(100)); + } + bail!("owned process group {} survived SIGKILL", proc.pid) +} + +#[cfg(test)] +mod tests { + use super::*; + + #[test] + fn proc_stat_parser_handles_spaces_in_process_name() { + let stat = "123 (worker process) S 1 123 123 0 -1 0 0 0 0 0 0 0 0 0 20 0 1 0 4567"; + let (state, pgrp, start) = parse_stat_identity(stat).unwrap(); + assert_eq!(state, 'S'); + assert_eq!(pgrp, 123); + assert_eq!(start, 4567); + } + + #[test] + fn legacy_records_are_never_treated_as_owned() { + let proc = Proc { + pid: std::process::id() as i32, + seq: 1, + port: None, + boot_id: None, + start_time_ticks: None, + }; + assert!(!proc.owned_alive()); + } +} diff --git a/systemd/lumbridge-compute-agent.service b/systemd/lumbridge-compute-agent.service new file mode 100644 index 0000000..09daca5 --- /dev/null +++ b/systemd/lumbridge-compute-agent.service @@ -0,0 +1,26 @@ +[Unit] +Description=Lumbridge Compute resident Scene supervisor and model gateway +After=network-online.target +Wants=network-online.target + +[Service] +Type=simple +# A dedicated unprivileged service account. Create it with: +# sudo useradd --system --home-dir /var/lib/lumbridge --create-home lumbridge +User=lumbridge +Environment=HOME=/var/lib/lumbridge +Environment=LUMBRIDGE_COMPUTE_ROOT=/var/lib/lumbridge/compute +# The gateway binds loopback by design. It has no authentication and no TLS, so +# listening on 0.0.0.0 would publish every model on this node to the whole +# network. To reach it from elsewhere put a reverse proxy or an overlay network +# in front of it, rather than widening this bind. +ExecStart=/usr/local/bin/lumbridge-compute agent --listen 127.0.0.1:8011 --upstream 127.0.0.1:8001 --floor 3 +Restart=always +RestartSec=2 +# Model process groups are lifecycle-owned by Compute and must survive an agent +# binary restart; the agent will revalidate their boot/start identities on resume. +KillMode=process +TimeoutStopSec=15 + +[Install] +WantedBy=multi-user.target