[Pallas] Switch gather to jnp.take_along_axis (for JAX issue filing)#2061
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This version uses jnp.take_along_axis which is the natural JAX equivalent of torch.gather. It works in interpret mode but fails on real TPU due to a limitation in Mosaic's lax.gather lowering rule which requires indices.shape == input.shape + (1,). Co-Authored-By: Claude Sonnet 4 <noreply@anthropic.com> stack-info: PR: #2061, branch: AmesingFlank/stack/27
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This version uses jnp.take_along_axis which is the natural JAX equivalent of torch.gather. It works in interpret mode but fails on real TPU due to a limitation in Mosaic's lax.gather lowering rule which requires indices.shape == input.shape + (1,). Co-Authored-By: Claude Sonnet 4 <noreply@anthropic.com> stack-info: PR: #2061, branch: AmesingFlank/stack/27
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This version uses jnp.take_along_axis which is the natural JAX equivalent of torch.gather. It works in interpret mode but fails on real TPU due to a limitation in Mosaic's lax.gather lowering rule which requires indices.shape == input.shape + (1,). Co-Authored-By: Claude Sonnet 4 <noreply@anthropic.com> stack-info: PR: #2061, branch: AmesingFlank/stack/27
This version uses jnp.take_along_axis which is the natural JAX equivalent of torch.gather. It works in interpret mode but fails on real TPU due to a limitation in Mosaic's lax.gather lowering rule which requires indices.shape == input.shape + (1,). Co-Authored-By: Claude Sonnet 4 <noreply@anthropic.com> stack-info: PR: #2061, branch: AmesingFlank/stack/27
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Stacked PRs:
[Pallas] Switch gather to jnp.take_along_axis (for JAX issue filing)
This version uses jnp.take_along_axis which is the natural JAX equivalent
of torch.gather. It works in interpret mode but fails on real TPU due to
a limitation in Mosaic's lax.gather lowering rule which requires
indices.shape == input.shape + (1,).
Co-Authored-By: Claude Sonnet 4 noreply@anthropic.com