Warm the wasm-jit artifact cache before the run - #362
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The wasm-jit runtime module and the external "C" side libraries are fixed and model-independent, but compiling them costs gigabytes of Cranelift each, and omc reuses an artifact only in a process whose engine configuration matches. Filling the per-user cache once here spares every one of thousands of omc processes that cost: for `Rectifier6pulseFFT` it is 2243 MB of peak RSS instead of 6396 MB. It has to sit outside `runScript`, because the compile does not fit inside the `ulimit -v` the tests run under -- the 28 artifacts peak around 16 GB. Best-effort, so a failure here only means each model compiles what it needs for itself, as it does today. Needs the omc side of it, where `OMC_WASM_PRECOMPILE_CACHE` with no value means the per-user cache. Assisted-by: Claude Opus 5 (1M context)
sjoelund
enabled auto-merge (squash)
September 18, 2026 09:39
sjoelund
disabled auto-merge
September 18, 2026 09:53
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The wasm-jit runtime module and the external "C" side libraries are fixed and model-independent, but compiling them costs gigabytes of Cranelift each, and omc reuses an artifact only in a process whose engine configuration matches. Filling the per-user cache once here spares every one of thousands of omc processes that cost: for
Rectifier6pulseFFTit is 2243 MB of peak RSS instead of 6396 MB.It has to sit outside
runScript, because the compile does not fit inside theulimit -vthe tests run under -- the 28 artifacts peak around 16 GB. Best-effort, so a failure here only means each model compiles what it needs for itself, as it does today.Needs the omc side of it, where
OMC_WASM_PRECOMPILE_CACHEwith no value means the per-user cache.Assisted-by: Claude Opus 5 (1M context)