Warn when using persistent cache with debug env vars#7175
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JackCaoG
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Jun 3, 2024
| // the compilation result. | ||
| static std::vector<std::string> flag_vars = {"XLA_FLAGS", "LIBTPU_INIT_ARGS"}; | ||
| static std::vector<std::string> raw_vars = {"TPU_MEGACORE"}; | ||
| static std::vector<std::string> raw_vars = {"TPU_MEGACORE", "XLA_HLO_DEBUG"}; |
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can we also include XLA_IR_DEBUG? This flag will add additional meta data to the HLO.
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Ah I see, I didn't think XLA_IR_DEBUG would touch the HLO, I'll include both env vars here.
JackCaoG
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Jun 3, 2024
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See also #7169
When using the persistent compilation cache, modifications to the HLO metadata will not impact the graph hash, and the persistent cache will load executables compiled with potentially outdated metadata.
This change:
XLA_HLO_DEBUGorXLA_IR_DEBUGis setXLA_HLO_DEBUGorXLA_IR_DEBUGset.