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Add support for resharding width-sharded tensors to/from DRAM #15526

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Add support for resharding width-sharded tensors to/from DRAM #15526

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Commits on Nov 28, 2024

  1. Add support for resharding width-sharded tensors to/from DRAM 

    This commit introduces a new width-shard to width-shard reshard kernel,
modeled after the height-sharded tensor reshard special case implemented
in `reshard_multi_core_same_width`.

Supported operations include:

- L1 to L1
- L1 to DRAM
- DRAM to L1

Currently, only row-major tensors are supported. For unsupported cases,
we fall back to the generalized reshard implementation.

Unit tests have been added to validate the new kernel functionality.
    @esmalTT
    esmalTT committed Nov 28, 2024
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