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67 lines
2.0 KiB
67 lines
2.0 KiB
// Copyright (c) 2018 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/fluid/framework/details/fetch_barrier_op_handle.h"
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#include <string>
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namespace paddle {
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namespace framework {
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namespace details {
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struct VarHandleBase;
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FetchBarrierOpHandle::FetchBarrierOpHandle(
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ir::Node *node, const std::vector<Scope *> &local_scopes,
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const std::vector<platform::Place> &places)
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// fetch_barrier op always run on place0, but output on all places.
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: OpHandleBase(node),
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op_(framework::OpRegistry::CreateOp(*node->Op())),
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local_scopes_(local_scopes),
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places_(places),
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run_scope_(local_scopes[0]),
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place_(places[0]) {
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for (auto &p : places) {
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this->SetDeviceContext(p, platform::DeviceContextPool::Instance().Get(p));
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}
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}
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bool FetchBarrierOpHandle::IsMultiDeviceTransfer() {
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// override IsMultiDeviceTransfer to return true
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return true;
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}
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void FetchBarrierOpHandle::RunImpl() {
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WaitInputVarGenerated(place_);
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auto run_func = [this]() { op_->Run(*local_exec_scopes_[0], place_); };
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if (is_lock_and_record_event_free_) {
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run_func();
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} else {
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this->RunAndRecordEvent(run_func);
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}
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}
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bool FetchBarrierOpHandle::NeedWait(VarHandleBase *in_var) {
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bool need_wait =
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in_var && in_var->GeneratedOp() &&
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in_var->GeneratedOp()->DeviceContext(place_) != dev_ctxes_.at(place_);
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return need_wait;
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}
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std::string FetchBarrierOpHandle::Name() const { return op_->Type(); }
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} // namespace details
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} // namespace framework
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} // namespace paddle
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