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DGR-032: Implement deterministic fake ShardEngine #16

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opened 2026-07-16 20:36:03 +00:00 by popov · 0 comments
popov commented 2026-07-16 20:36:03 +00:00
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DGR-032: Implement deterministic fake ShardEngine

  • Status / triage: specification only; ready-for-agent; passes: false
  • Execution mode: AFK
  • Milestone: M1
  • Dependencies: DGR-031
  • Blocks (derived): DGR-033
  • Labels: area:engine, area:testing, type:fixture, priority:p0, ready-for-agent
  • Evidence class: fixture
  • Hardware: none
  • Model: fake
  • Upstream: no

Objective / description

Fresh Ralph session: read .scratch/distributed-gguf-runtime/RALPH-CONTEXT.md, source issue .scratch/distributed-gguf-runtime/issues/032-implement-deterministic-fake-shardengine.md, and evidence READMEs for dependencies (DGR-031) before changing code. Inspect live source/tests rather than trusting legacy pass states. Objective: Provide an engine fixture that deterministically transforms typed boundary bundles and session state.

Acceptance criteria

  • Support head, middle, tail, prefill, decode, cancellation, and release with deterministic outputs.
  • Model isolated session/epoch state and deterministic cache-miss/stale-epoch failures.
  • Support configurable delay, memory pressure, malformed output, and crash injection.
  • Contract tests distinguish fixture evidence from real-model certification.
  • 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-032/README.md. Until every criterion and applicable gate has real evidence, this story remains passes: false. Legacy evidence is provenance only, not completion credit.

<!-- GENERATED FROM prd.json — DO NOT EDIT AS AN INDEPENDENT SOURCE. prd.json IS AUTHORITATIVE. --> # DGR-032: Implement deterministic fake `ShardEngine` - **Status / triage:** specification only; `ready-for-agent`; `passes: false` - **Execution mode:** `AFK` - **Milestone:** `M1` - **Dependencies:** `DGR-031` - **Blocks (derived):** `DGR-033` - **Labels:** `area:engine`, `area:testing`, `type:fixture`, `priority:p0`, `ready-for-agent` - **Evidence class:** `fixture` - **Hardware:** `none` - **Model:** `fake` - **Upstream:** `no` ## Objective / description Fresh Ralph session: read `.scratch/distributed-gguf-runtime/RALPH-CONTEXT.md`, source issue `.scratch/distributed-gguf-runtime/issues/032-implement-deterministic-fake-shardengine.md`, and evidence READMEs for dependencies (DGR-031) before changing code. Inspect live source/tests rather than trusting legacy pass states. Objective: Provide an engine fixture that deterministically transforms typed boundary bundles and session state. ## Acceptance criteria - [ ] Support head, middle, tail, prefill, decode, cancellation, and release with deterministic outputs. - [ ] Model isolated session/epoch state and deterministic cache-miss/stale-epoch failures. - [ ] Support configurable delay, memory pressure, malformed output, and crash injection. - [ ] Contract tests distinguish fixture evidence from real-model certification. - [ ] 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-032/README.md`. Until every criterion and applicable gate has real evidence, this story remains `passes: false`. Legacy evidence is provenance only, not completion credit. <!-- ralph-story-id: DGR-032 -->
popov added this to the M1 milestone 2026-07-16 20:36:03 +00:00
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Reference: popov/neuron-tai#16
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