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* update FE to 1.15.0-rc
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* fix merge
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for more information, see https://pre-commit.ci



* reduce ew kernels; fix causal masks; add more tests
Signed-off-by: Charlene Yang <8636796+cyanguwa@users.noreply.github.com>

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* minor fix to tests
Signed-off-by: Charlene Yang <8636796+cyanguwa@users.noreply.github.com>

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* remove logic for flash-attn
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* WIP: add CP support for p2p/a2a/all_gather
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* WIP: add thd support
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* fix lint
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Signed-off-by: Charlene Yang <8636796+cyanguwa@users.noreply.github.com>

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Signed-off-by: Charlene Yang <8636796+cyanguwa@users.noreply.github.com>

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Signed-off-by: Charlene Yang <8636796+cyanguwa@users.noreply.github.com>

---------
Signed-off-by: Charlene Yang <8636796+cyanguwa@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>