2022-05-21 05:21:58 +08:00
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/******************************************************************************
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* Copyright (c) 2011-2021, NVIDIA CORPORATION. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the NVIDIA CORPORATION nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************/
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#pragma once
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#include <philox.cuh>
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#include <fmha.h>
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#include <fmha/utils.h>
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#include <fmha/smem_tile.h>
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#include <fmha/gmem_tile.h>
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#include <fmha/mask.h>
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#include <fmha/softmax.h>
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namespace fmha {
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template<int THREADS_PER_CTA>
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struct BlockInfoPadded {
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template<typename Params>
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__device__ BlockInfoPadded(const Params ¶ms,
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const int bidb,
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const int bidh,
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const int tidx)
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: bidb(bidb), bidh(bidh), h(params.h) {
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// The block index.
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2022-07-01 11:26:04 +08:00
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sum_s_k = params.cu_seqlens_k[bidb];
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actual_seqlen_k = params.cu_seqlens_k[bidb + 1] - sum_s_k;
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sum_s_q = params.cu_seqlens_q[bidb];
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actual_seqlen_q = params.cu_seqlens_q[bidb + 1] - sum_s_q;
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2022-05-21 05:21:58 +08:00
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tidx_global = (bidb * params.h + bidh) * THREADS_PER_CTA + tidx;
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}
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__device__ bool stop_early(const int start_col = 0) const {
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return actual_seqlen_k <= start_col;
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2022-05-21 05:21:58 +08:00
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}
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2022-07-01 11:26:04 +08:00
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int actual_seqlen_q;
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int actual_seqlen_k;
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int sum_s_q;
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int sum_s_k;
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2022-05-21 05:21:58 +08:00
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int bidh;
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int bidb;
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int tidx_global;
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int h;
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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} // namespace fmha
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