Doubling tile texel col count for mat mul op to improve performance.

[trivedivivek]

Summary:

Summary

This change doubled tile texel column count for 8 bit matrix multiplication operation to improve performance.

Differential Revision: D84679398

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/15192

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❗ 1 Active SEVs

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• [ROCm][CI] Machines under the label linux.rocm.gpu.2 are undergoing maintenance.

❌ 6 New Failures, 3 Unrelated Failures

As of commit 90d99e2 with merge base 296e07f ():

NEW FAILURES - The following jobs have failed:

• pull / test-samsung-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 89ab895d3a38726cb648764f375d330ed9a19ed844c3cbfde7d9a9a95309389f /exec failed with exit code 1
• pull / unittest-arm-backend-with-no-fvp (test_pytest_models) / linux-job (gh)
  RuntimeError: Command docker exec -t 9ddc84fdc88b4b5bce35e6ca07aadd26c161d0d13a99df3f626ed513a523bc03 /exec failed with exit code 1
• pull / unittest-nxp-neutron / linux-job (gh)
  RuntimeError: Command docker exec -t 09f71a0d1141826a1837e79f65918efbb8f63835b8a2ebf8be54a8d817aec8ed /exec failed with exit code 1
• Test CUDA Builds / export-voxtral-cuda-non-quantized / linux-job (gh)
  RuntimeError: Command docker exec -t fef916013f7fc52a5d6025f4b4c2587fb69a20a7abc7aaa55164894aa358f5fc /exec failed with exit code 2
• Test CUDA Builds / export-voxtral-cuda-quantized-int4-tile-packed / linux-job (gh)
  RuntimeError: Command docker exec -t bcf99984b10267a22412b01ffef91ab69370740557adc11d6e4f44ac60af0806 /exec failed with exit code 2
• Test CUDA Builds / export-voxtral-cuda-quantized-int4-weight-only / linux-job (gh)
  RuntimeError: Command docker exec -t 95fb999ef93a3abb5a8e8f1bb1e57d67c626e8105d276f6252123802adb7afbc /exec failed with exit code 2

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / android / run-emulator (gh) (trunk failure)
  The process '/usr/bin/sh' failed with exit code 255
• pull / unittest / linux / linux-job (gh) (trunk failure)
• pull / unittest-editable / linux / linux-job (gh) (trunk failure)

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[meta-codesync]

@trivedivivek has exported this pull request. If you are a Meta employee, you can view the originating Diff in D84679398.