DGR-057: Benchmark batching saturation and fairness #41

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popov · 2026-07-16T20:36:06Z

popov commented

2026-07-16 20:36:06 +00:00

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.

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.

# 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. ## 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.

popov added this to the M4 milestone 2026-07-16 20:36:06 +00:00

popov added the type:benchmark area:performance area:batching priority:p1 ready-for-agent status:blocked labels 2026-07-16 20:36:06 +00:00

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Reference: popov/neuron-tai#41