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Fix compile_cache_test by filtering cache files for jit_train_step #4222

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Merged
copybara-service merged 1 commit into from
Jun 23, 2026
+5 −2
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Fix compile_cache_test by filtering cache files for jit_train_step #4222

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7 changes: 5 additions & 2 deletions tests/unit/compile_cache_test.py
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Original file line number Diff line number Diff line change
Expand Up @@ -106,8 +106,11 @@ def test_train_step_cache_hit():
"cache was not writeable or the JAX cache configuration was ignored."
)

assert len(cache_files) == 1, (
f"Expected exactly 1 JAX compilation cache file, but found {len(cache_files)}: {cache_files}. "
train_step_cache_files = [f for f in cache_files if f.startswith("jit_train_step")]
assert len(train_step_cache_files) == 1, (
f"Expected exactly 1 JAX compilation cache file for 'jit_train_step', "
f"but found {len(train_step_cache_files)}: {train_step_cache_files} "
f"(all cache files: {cache_files}). "
"This indicates a cache miss where AOT compilation and runtime execution generated different keys, "
"causing train_step to be compiled twice (double-compilation regression)."
)
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