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paddlepaddle--paddle/paddle/phi/kernels/kps/all_reduce_kernel.kps
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2026-07-13 12:40:42 +08:00

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// Copyright (c) 2024 PaddlePaddle Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifdef PADDLE_WITH_XPU_KP
// Please do not modify the following code
#if defined(__CUDA_ARCH__)
#undef __CUDA_ARCH__
#endif
#if defined(__CUDACC__)
#undef __CUDACC__
#endif
#if defined(__CUDA__)
#undef __CUDA__
#endif
#if defined(__NVCC__)
#undef __NVCC__
#endif
#include "paddle/phi/backends/all_context.h"
#include "paddle/phi/core/kernel_registry.h"
#include "paddle/phi/kernels/all_reduce_kernel.h"
#if defined(PADDLE_WITH_XPU_BKCL)
#include "paddle/phi/core/distributed/bkcl_comm_context.h"
#endif
namespace phi {
template <typename T, typename Context>
void AllReduceKernel(const Context& dev_ctx,
const DenseTensor& x,
int reduce_type,
DenseTensor* out) {
#if defined(PADDLE_WITH_XPU_BKCL)
out->Resize(x.dims());
dev_ctx.template Alloc<T>(out);
XPUStream stream = nullptr;
auto comm_ctx =
static_cast<distributed::BKCLCommContext*>(dev_ctx.GetCommContext());
PADDLE_ENFORCE_NE(comm_ctx,
nullptr,
common::errors::Unavailable(
"BKCLCommContext is nullptr, collective op should "
"has ring_id attr."));
stream = comm_ctx->GetStream();
BKCLOp bkcl_reduce_type = BKCL_ADD;
switch (static_cast<ReduceType>(reduce_type)) {
case ReduceType::kRedSum:
bkcl_reduce_type = BKCL_ADD;
break;
case ReduceType::kRedMax:
bkcl_reduce_type = BKCL_MAX;
break;
case ReduceType::kRedMin:
bkcl_reduce_type = BKCL_MIN;
break;
case ReduceType::kRedProd:
bkcl_reduce_type = BKCL_PRODUCT;
break;
default:
PADDLE_THROW(common::errors::InvalidArgument("Invalid reduce type: %d",
reduce_type));
}
comm_ctx->AllReduce(out, x, bkcl_reduce_type, stream);
#else
PADDLE_THROW(common::errors::PreconditionNotMet(
"PaddlePaddle should be compiled with XPU."));
#endif
}
} // namespace phi
PD_REGISTER_KERNEL(all_reduce, KPS, ALL_LAYOUT, phi::AllReduceKernel, float) {}
#endif