40 lines
2.9 KiB
Markdown
40 lines
2.9 KiB
Markdown
<!-- GENERATED FROM prd.json — DO NOT EDIT AS AN INDEPENDENT SOURCE. prd.json IS AUTHORITATIVE. -->
|
|
# DGR-057: Benchmark batching saturation and fairness
|
|
|
|
- **Status / triage:** specification only; `ready-for-agent`; `passes: false`
|
|
- **Execution mode:** `AFK`
|
|
- **Milestone:** `M4`
|
|
- **Dependencies:** `DGR-055`, `DGR-056`
|
|
- **Blocks (derived):** `DGR-061`, `DGR-063`, `DGR-070`
|
|
- **Labels:** `area:performance`, `area:batching`, `type:benchmark`, `priority:p1`, `ready-for-agent`
|
|
- **Evidence class:** `real-hardware`
|
|
- **Hardware:** `required`
|
|
- **Model:** `dense-llama+deepseek-v4`
|
|
- **Upstream:** `no`
|
|
|
|
## Objective / description
|
|
|
|
Fresh Ralph session: read `.scratch/distributed-gguf-runtime/RALPH-CONTEXT.md`, source issue `.scratch/distributed-gguf-runtime/issues/057-benchmark-batching-saturation-and-fairness.md`, and evidence READMEs for dependencies (DGR-055, DGR-056) before changing code. Inspect live source/tests rather than trusting legacy pass states. Objective: Identify useful concurrency and saturation points without assuming one global batch size.
|
|
|
|
## Acceptance criteria
|
|
|
|
- [ ] Run controlled concurrency 1/2/4/8 and record aggregate throughput, per-request p50/p95, TTFT, queue time, occupancy, and memory.
|
|
- [ ] Measure dense and V4 lanes separately where hardware permits.
|
|
- [ ] Verify bounded fairness and no prefill/decode starvation.
|
|
- [ ] Produce machine-readable saturation recommendations consumed by capability reporting, not hardcoded constants.
|
|
- [ ] Applicable shared quality gates in `prd.json` pass, and the evidence handoff records exact commands/results, changed files, limitations, and dependency handoff.
|
|
|
|
## Shared quality gates
|
|
|
|
- Targeted deterministic tests pass; Python changes also pass `python -m compileall packages tests`.
|
|
- `git diff --check` passes.
|
|
- Default tests are model-download-free, API-credit-free, and GPU-free.
|
|
- Evidence README records exact changed files, commands/results, limitations, and dependency handoff; no fabricated evidence or inherited completion credit.
|
|
- Native changes pass focused out-of-tree CMake build and CTest; patch changes verify clean apply/check/reverse against the exact llama.cpp pin.
|
|
- Runs are opt-in and record exact artifact/split hashes, runtime/upstream pin, backend/driver, hardware, network, commands, and raw metrics. Model artifacts use configured mounted-drive storage and never `/home`.
|
|
- Preserve existing Transformers behavior and backend-agnostic Tracker routing/load balancing/billing/relay semantics unless an explicit versioned contract says otherwise. One scoped story commit is expected during execution, but this specification-materialization change is not committed.
|
|
|
|
## Evidence handoff
|
|
|
|
Write and verify `.scratch/distributed-gguf-runtime/evidence/DGR-057/README.md`. Until every criterion and applicable gate has real evidence, this story remains `passes: false`. Legacy evidence is provenance only, not completion credit.
|