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perf(cpu-ep): stop the half GEMM forking the pool for work too small to repay it (3.15x on small shapes) - #1149

Merged

justinchuby merged 7 commits into

mainfrom

squad/roy-half-gemm-guard

Aug 18, 2026

Commits on Aug 18, 2026
- perf(cpu-ep): stop the half GEMM forking the pool for work too small to repay it
  
  Roy
  and
  Copilot
  committed
  424d3d8
- review: lower the threshold to the value that wins at every thread count, and never fork for one block
  
  Roy
  and
  Copilot
  committed
  dbc3da2
- review: raise the half-GEMM fork threshold to the crossover the pinned build actually shows
  
  justinchuby
  and
  Copilot
  committed
  f094387
- Merge origin/main into squad/roy-half-gemm-guard
  
  justinchuby
  and
  Copilot
  committed
  ebad46a
- review: drop the stray weight-offload scratch file from this branch
  
  justinchuby
  and
  Copilot
  committed
  1a6d4c4
- review: carry the rustfmt repair so this branch can go green
  
  justinchuby
  and
  Copilot
  committed
  9e82c18
- Merge origin/main into squad/roy-half-gemm-guard
  justinchuby
  committed
  5deef02