Support running tf2jax TPU tests when TensorFlow does not have TPU logical devices registered. - #282
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…gical devices registered. Update test_util.TestCase and TPU tests to fall back to TensorFlow CPU when TF lacks a device matching jax.default_backend(), enable float32 matmul precision on JAX TPU for numerical comparisons against TF CPU, and avoid executing TPU-targeted XlaCallModule graphs on TF CPU. PiperOrigin-RevId: 983828874
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Support running tf2jax TPU tests when TensorFlow does not have TPU logical devices registered.
Update test_util.TestCase and TPU tests to fall back to TensorFlow CPU when TF lacks a device matching jax.default_backend(), enable float32 matmul precision on JAX TPU for numerical comparisons against TF CPU, and avoid executing TPU-targeted XlaCallModule graphs on TF CPU.