[test] speedup TRT accuracy tests #5388
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Speedup TRT accuracy tests
TRT accuracy tests involve
convert
andbuild
stages, and different cases of the same suite often use the exact same flags toconvert_checkpoint.py
or totrtllm-build
.This PR introduces a new
TempDirLRUCache
that caches the checkpoint and engine directories from each test case, and reuses them in case a case uses the exact same flags.This optimization can potentially reduce the test time of some cases by several minutes.