[Pallas] Update xfail reasons for examples to reflect current errors#2074
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[Pallas] Update xfail reasons for examples to reflect current errors#2074
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The stored xfail reasons on many examples were stale — most dated back to when the Pallas backend first xfailed them, but the underlying error has since moved (or was always something different). Ran the full xfailed list against current origin/main and updated each reason to match the actual error observed today. The updates also surface some new clusters worth tracking: - "int tensor indexing not yet lowered for TPU" (5 tests: embedding_pointers/block_ptr, concat, cross_entropy, gather_gemv) — all hit lowering.py:1699 - "Pallas rejects int64 inputs (jagged offsets)" (6 tests: all jagged kernels) — blocked in _pallas_check_dtypes - "broadcasting shape mismatch in codegen" (5 tests: matmul_layernorm_dynamic_shapes, concat_block_ptr, se_bwd_dx/da, grpo_loss_bwd) — TypeError from jax.numpy broadcast - "Mosaic compile error" (2 tests: attention_dynamic, layernorm_bwd) No behavior change; xfail markers still apply, only the `reason=` string is updated.
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jansel
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May 5, 2026
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