wehub-resource-sync
57 lines
2.2 KiB
C++
57 lines
2.2 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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#include "paddle/phi/kernels/barrier_kernel.h"
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#include "paddle/phi/api/backward/backward_api_base.h"
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#include "paddle/phi/api/include/api.h"
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#include "paddle/phi/backends/all_context.h"
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#include "paddle/phi/backends/device_manager.h"
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#include "paddle/phi/core/distributed/collective/process_group.h"
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#include "paddle/phi/core/distributed/comm_context_manager.h"
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#include "paddle/phi/core/distributed/xccl_comm_context.h"
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#include "paddle/phi/core/kernel_registry.h"
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#include "paddle/phi/core/tensor_utils.h"
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#ifdef PADDLE_WITH_CUSTOM_DEVICE
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namespace phi {
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template <typename T, typename Context>
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void BarrierKernel(const Context& dev_ctx,
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const DenseTensor& x_in,
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DenseTensor* out) {
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auto in = &x_in;
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auto place = dev_ctx.GetPlace();
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int64_t numel = in->numel();
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const void* sendbuff = in->data();
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void* recvbuff = dev_ctx.template Alloc<T>(out);
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auto comm = reinterpret_cast<phi::distributed::XCCLCommContext*>(
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dev_ctx.GetCommContext());
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std::shared_ptr<phi::stream::Stream> stream;
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stream = comm->GetStream();
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phi::DeviceManager::CCLAllReduce(place.GetDeviceType(),
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const_cast<void*>(sendbuff),
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recvbuff,
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numel,
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in->dtype(),
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phi::ccl::CCLReduceOp::SUM,
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comm->GetXcclComm(),
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stream->raw_stream());
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}
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} // namespace phi
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PD_REGISTER_KERNEL(barrier, Custom, ALL_LAYOUT, phi::BarrierKernel, int) {}
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#endif
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