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75 lines
2.5 KiB
75 lines
2.5 KiB
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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/platform/profiler.h"
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namespace paddle {
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namespace platform {
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ProfilerState kState = ProfilerState::kDisabled;
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uint32_t kNextThreadId = 0;
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std::mutex kAllEventListsMutex;
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std::list<std::shared_ptr<EventList>> kAllEventLists;
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thread_local std::shared_ptr<EventList> kEventList;
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thread_local int32_t kThreadId;
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void EnableProfiler(ProfilerState state) {
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PADDLE_ENFORCE(state != ProfilerState::kDisabled,
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"Can't enbale profling, since the input state is ",
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"ProfilerState::kDisabled");
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PADDLE_ENFORCE(kState == ProfilerState::kDisabled,
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"The profiling state should be disabled when calling ",
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"EnableProfiler.");
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kState = state;
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#ifdef PADDLE_WITH_CUDA
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auto ForEachDevice = [](std::function<void(int)> op) {
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int count = GetCUDADeviceCount();
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for (int i = 0; i < count; i++) {
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DeviceGuard dev_guard(i);
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op(i);
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}
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};
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if (kState == ProfilerState::kCUDA) {
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// Generate some dummy evenets first to reduce the startup overhead.
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for (int i = 0; i < 5; i++) {
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ForEachDevice([](int d) {
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DeviceContext* dev_ctx = new CUDADeviceContext(GPUPlace(d));
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Mark("_cuda_startup_", dev_ctx);
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dev_ctx->Wait();
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});
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}
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}
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#endif
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// Mark the profiling start.
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Mark("_start_profiler_");
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}
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std::vector<std::vector<Event>> DisableProfiler() {
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PADDLE_ENFORCE(kState != ProfilerState::kDisabled,
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"Can't disable profiling, since it's not starting.");
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// Mark the profiling stop.
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Mark("_stop_profiler_");
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kState = ProfilerState::kDisabled;
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std::vector<std::vector<Event>> result;
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std::lock_guard<std::mutex> guard(kAllEventListsMutex);
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for (auto it = kAllEventLists.begin(); it != kAllEventLists.end(); ++it) {
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auto& list = *it;
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result.emplace_back(list->Reduce());
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}
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return result;
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}
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} // namespace platform
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} // namespace paddle
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