62 lines
2.8 KiB
C++
62 lines
2.8 KiB
C++
/***************************************************************************************************
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* Copyright (c) 2017-2019, NVIDIA CORPORATION. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are permitted
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* provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* * Neither the name of the NVIDIA CORPORATION nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TOR (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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**************************************************************************************************/
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/*! \file
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\brief Defies functors for mapping blockIdx to partitions of the batched reduction computation.
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*/
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#pragma once
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#include "cutlass/coord.h"
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namespace cutlass {
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namespace reduction {
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struct DefaultBlockSwizzle {
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/// Ctor
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CUTLASS_HOST_DEVICE DefaultBlockSwizzle() {}
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/// Swizzle the block index.
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CUTLASS_DEVICE dim3 swizzle() { return dim3(blockIdx.x, blockIdx.y, blockIdx.z); }
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///
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CUTLASS_HOST_DEVICE dim3 get_grid_layout(Coord<3> const &problem_size,
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Coord<3> const &OutputTile) {
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assert(OutputTile[0] == 1 && OutputTile[1] == 1);
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assert((problem_size[0] * problem_size[1] * problem_size[2]) % OutputTile[2] == 0);
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dim3 grid;
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grid.x = problem_size[0] * problem_size[1] * problem_size[2]
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/ OutputTile[2] ;
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return grid;
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}
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///
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CUTLASS_DEVICE Coord<3> get_threadblock_offset(Coord<3> const &SubTile) {
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assert(SubTile[0] == 1 && SubTile[1] == 1);
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dim3 block = swizzle();
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Coord<3> threadblock_offset =
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make_Coord(0, 0, block.x * SubTile[2]);
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return threadblock_offset;
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}
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};
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} // namespace reduction
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} // namespace cutlass
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