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* Expose JAX sliding window attn API
Signed-off-by: Hua Huang <huah@nvidia.com>

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* No SWA in context parallel; fix RNG seed in test
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* Handle SAW API discrepancy in cuDNN and Python
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* Add SAW API for flax, all tests passed

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* Update test_praxis_layers.py for SWA, test passed
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* Use tuple window_size; update for PR #1212
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* Add and adjust some pytest.skip
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* Revised following Reese Wang's comments

Still need further debugging:
FAILED test_fused_attn.py::TestFusedAttn::test_backward[NO_SWA-DROP_0.0-4-128-256-16-16-64-BF16-CROSS-KV_PACKED-NO_MASK-NO_BIAS] - AssertionError:
FAILED test_fused_attn.py::TestFusedAttn::test_backward[NO_SWA-DROP_0.0-4-128-256-16-16-64-BF16-CROSS-KV_PACKED-NO_MASK-POST_SCALE_BIAS-1HSS] - AssertionError:
FAILED test_fused_attn.py::TestFusedAttn::test_backward[NO_SWA-DROP_0.0-4-128-256-16-16-64-BF16-CROSS-SEPARATE-NO_MASK-NO_BIAS] - AssertionError:
FAILED test_fused_attn.py::TestFusedAttn::test_backward[NO_SWA-DROP_0.0-4-128-256-16-16-64-BF16-CROSS-SEPARATE-NO_MASK-POST_SCALE_BIAS-1HSS] - AssertionError:

These errors does not exist in the previous commit
Signed-off-by: Hua Huang <huah@nvidia.com>

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* Fix no-SWA test case errors in previous commit
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* Add Padding mask w/ sliding windows sanity tests
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* Use float32 for the reference code softmax calculation
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Implementation of context parallel fused attention using all-gather.
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* Propagate sm_margin to the underly layernorm kernels

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* implemented custom call with ffi in csrc

* moved headers of misc to misc.h, add ffi.h

* ActLu and DActLu lowering with ffi_lowering

* CastTranspose with ffi_lowering

* enabled cudaGraph

* added 4d input test case to TestActivationLu

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* added env var NVTE_JAX_WITH_FFI, default value = 1

* replace casting ActivationEnum by taking its value

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* Support non-deterministic algo
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* Support actlen = 0 after cuDNN 9.3.0
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* add multi-latent attention for DPA
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* fix Jax/Paddle API
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* fix lint
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* Revert "fix lint"

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* fix stride check in get_qkv_layout
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* WIP: fix layout_thd tests
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* WIP: debug info
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* fix merge conflict
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* fix thd pad_between_seqs=False/True tests
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* Specify python version
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* fix
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* Fixes
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* fix
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* dynamically load nvrtc
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* Lint
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* paddle wheel tie to python version
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* Fix paddle build from src [wip]
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* Fix workflow paddle build
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* Fix paddle
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* Fix paddle
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* fix
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* fixes
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* CLeanup, remove residual code
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* add cuDNN swa
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* add window_size to get_backend; fix jax and paddle
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* minor fixes; add set_deter to bwd_impl
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* minor fixes and lint
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* minor fix for fused attn fwd/bwd calls
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* fix Jax
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