wehub-resource-sync
41 lines
1.6 KiB
C++
41 lines
1.6 KiB
C++
// Copyright (c) 2022 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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#include <vector>
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#include "paddle/phi/core/dense_tensor.h"
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namespace phi {
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// WHY add this op?
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// This op is used for convert fused_all_reduce_op_handle in Graph to Program.
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// i.e, fused_all_reduce_op_handle = check_memory_continue + all_reduce_sum
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// There are two reasons that check_memory_continue is added:
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// 1. all_reduce_sum takes single tensor as input, while
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// fused_all_reduce_op_handle takes tensor array as input, so we need a op to
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// convert tensor array into a single tensor
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// 2. fused_all_reduce_op_handle has a premise that all tensor's addresses are
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// continue, so we need a op to do the check.
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// see details in fused_all_reduce_op_handle.cc
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template <typename T, typename Context>
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void CheckMemoryContinueKernel(const Context &dev_ctx,
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const std::vector<const DenseTensor *> &input,
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DenseTensor *output,
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std::vector<DenseTensor *> xout);
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} // namespace phi
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