Make JAX axis names deterministic across executions.#38161
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Make JAX axis names deterministic across executions.#38161copybara-service[bot] wants to merge 1 commit into
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Previously, `_TempAxisName` used `id(obj)` (the memory address of the callable) to generate axis names. This resulted in non-deterministic names like: `<axis 0x5105796d2020>` that changed across different execution runs, making HLO fingerprints different across multiple runs. This CL introduces a global counter and a process-local cache to assign sequential IDs like: `<axis 0x0>`, `<axis 0x1>` to anonymous axes. The cache ensures that the same function object still receives the same axis name within a single run, while the counter ensures determinism across runs. PiperOrigin-RevId: 926066643
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Make JAX axis names deterministic across executions.
Previously,
_TempAxisNameusedid(obj)(the memory address of the callable) to generate axis names. This resulted in non-deterministic names like:<axis 0x5105796d2020>that changed across different execution runs, making HLO fingerprints different across multiple runs.This CL introduces a global counter and a process-local cache to assign sequential IDs like:
<axis 0x0>,<axis 0x1>to anonymous axes. The cache ensures that the same function object still receives the same axis name within a single run, while the counter ensures determinism across runs.