wehub-resource-sync
42 lines
1.5 KiB
C++
42 lines
1.5 KiB
C++
// Copyright (c) 2025 PaddlePaddle Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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namespace phi {
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template <typename T, typename Context>
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void FlashAttnV3GradKernel(
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const Context &ctx,
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const DenseTensor
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&q, // (b, s_q, h, d) or (total_q, h, d) if there is cu_seqlens_q
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const DenseTensor
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&k, // (b, s_k, h_k, d) or (total_k, h_k, d) if there is cu_seqlens_k
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const DenseTensor
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&v, // (b, s_k, h_k, d) or (total_k, h_k, d) if there is cu_seqlens_k
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const DenseTensor
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&out, // (b, s_q, h, d) or (total_q, h, d) if there is cu_seqlens_q
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const DenseTensor
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&softmax_lse, // (b, h, s_q) or (h, total_q) if there is cu_seqlens_q
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const DenseTensor &
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out_grad, // (b, s_q, h, d) or (total_q, h, d) if there is cu_seqlens_q
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float const softmax_scale,
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bool is_causal,
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int window_size_left,
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int window_size_right,
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float const softcap,
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int const sm_margin,
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DenseTensor *dq,
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DenseTensor *dk,
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DenseTensor *dv);
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} // namespace phi
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