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The
tpu_tracer
backend uses a static initializer that requires us to setTPU_LIBRARY_PATH
, which required us to roll back #5731. Instead, use the new PJRT C API profiler extension API to register the TPU profiler.profiler::RegisterProfilerForPlugin
that we can reuse for other plugins as needed. Mostly copied from JAX's pybind to do the same thing: https://github.com/openxla/xla/blob/34b419269fa7477155086730670e2aa740d80a0d/xla/python/profiler.cc#L90-L105tpu_tracer
starting a profiler sessions triggers a crash. Since the issue is (again) a static initializer, define our ownprofiler_backends
target that excludestpu_tracer
from the build entirely.Confirmed that TPU device traces still show up after this change.
cc @jyingl3