Merge branch 'develop' of https://github.com/PaddlePaddle/Paddle into bpr
frankwhzhang
6 years ago
commit
f4cc5881b0
@ -0,0 +1,3 @@
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cc_library(layer SRCS layer.cc DEPS proto_desc operator)
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cc_library(tracer SRCS tracer.cc DEPS proto_desc)
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cc_library(engine SRCS engine.cc)
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@ -0,0 +1,53 @@
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// Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
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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
|
||||
// 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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||||
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#include "paddle/fluid/imperative/engine.h"
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#include <mutex> // NOLINT
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#include <vector>
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#include "glog/logging.h"
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namespace paddle {
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namespace imperative {
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static std::once_flag init_engine;
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static Engine* engine;
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class DummyEngine : public Engine {
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public:
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void Enqueue(Runnable* runnable) override {
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queued_runnables_.push_back(runnable);
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}
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size_t Size() const override { return queued_runnables_.size(); }
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void Sync() override {
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for (Runnable* l : queued_runnables_) {
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LOG(INFO) << "running " << reinterpret_cast<void*>(l);
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}
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queued_runnables_.clear();
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}
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private:
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std::vector<Runnable*> queued_runnables_;
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};
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Engine* GetEngine() {
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std::call_once(init_engine, []() { engine = new DummyEngine(); });
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return engine;
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}
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} // namespace imperative
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} // namespace paddle
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@ -0,0 +1,39 @@
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// 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
|
||||
// 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 <cstddef>
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#include <cstdint>
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namespace paddle {
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namespace imperative {
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struct Runnable {};
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class Engine {
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public:
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virtual ~Engine() {}
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virtual void Enqueue(Runnable* runnable) = 0;
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virtual size_t Size() const = 0;
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virtual void Sync() = 0;
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};
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Engine* GetEngine();
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} // namespace imperative
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} // namespace paddle
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@ -0,0 +1,221 @@
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// 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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// 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/imperative/layer.h"
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#include <deque>
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#include <limits>
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#include <map>
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#include <random>
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#include <utility>
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#include "paddle/fluid/framework/lod_tensor.h"
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#include "paddle/fluid/framework/op_registry.h"
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#include "paddle/fluid/string/printf.h"
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namespace paddle {
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namespace imperative {
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using framework::Variable;
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void AddTo(Variable* src, Variable* dst) {
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framework::LoDTensor* dst_tensor = dst->GetMutable<framework::LoDTensor>();
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framework::LoDTensor* src_tensor = src->GetMutable<framework::LoDTensor>();
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PADDLE_ENFORCE(dst_tensor->numel() == src_tensor->numel(), "%lld vs %lld",
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dst_tensor->numel(), src_tensor->numel());
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float* dst_data = dst_tensor->mutable_data<float>(platform::CPUPlace());
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const float* src_data = src_tensor->data<float>();
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for (size_t i = 0; i < src_tensor->numel(); ++i) {
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dst_data[i] += src_data[i];
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}
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}
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class Autograd {
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public:
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explicit Autograd(framework::Scope* scope) : scope_(scope) {}
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void RunBackward(VarBase* var) {
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PADDLE_ENFORCE(var->pre_op_->op_desc_);
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// TODO(panyx0718): Only create for vars that "require_grad"
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(*var->pre_op_->output_vars_)[var->pre_op_out_idx_]->grads_ = var->grads_;
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std::deque<OpBase*> ready;
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ready.push_back(var->pre_op_);
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std::map<OpBase*, int> dep_counts = ComputeDepCounts(var->pre_op_);
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while (!ready.empty()) {
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OpBase* ready_op = ready.front();
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ready.pop_front();
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std::vector<Variable*> input_grads = ready_op->ApplyGrad(scope_);
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for (size_t i = 0; i < input_grads.size(); ++i) {
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if (!input_grads[i]) continue;
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OpBase* pre_op = ready_op->pre_ops_->at(i);
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if (!pre_op) continue;
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dep_counts[pre_op] -= 1;
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PADDLE_ENFORCE(dep_counts[pre_op] >= 0);
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bool pre_op_ready = dep_counts[pre_op] == 0;
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if (pre_op_ready) {
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ready.push_back(pre_op);
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}
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}
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}
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}
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private:
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std::map<OpBase*, int> ComputeDepCounts(OpBase* op) {
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std::map<OpBase*, int> ret;
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std::deque<OpBase*> queue;
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queue.push_back(op);
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std::unordered_set<OpBase*> visited;
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visited.insert(op);
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while (!queue.empty()) {
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OpBase* candidate = queue.front();
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queue.pop_front();
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for (OpBase* pre_op : *(candidate->pre_ops_)) {
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if (!pre_op) continue;
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if (visited.find(pre_op) == visited.end()) {
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visited.insert(pre_op);
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queue.push_back(pre_op);
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}
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ret[pre_op] += 1;
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}
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}
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return ret;
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}
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framework::Scope* scope_;
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};
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framework::Variable* CreateVariable(const std::string& name,
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const framework::DDim& dim, float val,
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framework::Scope* scope,
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bool random_name = true) {
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std::string varname = name;
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if (random_name) {
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std::mt19937 rng;
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rng.seed(std::random_device()());
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std::uniform_int_distribution<std::mt19937::result_type> dist6(
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1, std::numeric_limits<int>::max());
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int id = dist6(rng);
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varname = string::Sprintf("%s@%d", varname, id);
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}
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VLOG(3) << "creating var " << varname;
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framework::Variable* var = scope->Var(varname);
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framework::LoDTensor* tensor = var->GetMutable<framework::LoDTensor>();
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float* data = tensor->mutable_data<float>(dim, platform::CPUPlace());
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std::fill(data, data + tensor->numel(), val);
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return var;
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}
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framework::LoDTensor& VarBase::Grad() {
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VLOG(3) << "get var grad " << var_desc_->Name();
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return *grads_->GetMutable<framework::LoDTensor>();
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}
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void VarBase::ApplyGrad(framework::Scope* scope, Variable* grad) {
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VLOG(3) << "apply var grad " << var_desc_->Name() << " "
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<< grad->Get<framework::LoDTensor>().data<float>()[0];
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if (!grads_) {
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grads_ =
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CreateVariable(string::Sprintf("%s@IGrad", var_desc_->Name()),
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var_->Get<framework::LoDTensor>().dims(), 0.0, scope);
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}
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AddTo(grad, grads_);
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VLOG(3) << "grad_ after apply var grad " << var_desc_->Name() << " "
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<< grads_->Get<framework::LoDTensor>().data<float>()[0];
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}
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std::vector<Variable*> OpBase::ApplyGrad(framework::Scope* scope) {
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VLOG(3) << "op grad " << grad_op_desc_->Type();
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for (const std::string& grad_invar : grad_op_desc_->InputArgumentNames()) {
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if (grad_to_var_->find(grad_invar) == grad_to_var_->end()) {
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// grad op inputs can be forward inputs, so not in grad_to_var.
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continue;
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}
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VLOG(3) << "op grad in var " << grad_invar;
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block_->FindRecursiveOrCreateVar(grad_invar);
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framework::Variable* var = scope->Var(grad_invar);
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const std::string& invar = grad_to_var_->at(grad_invar);
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for (VarBase* varbase : *output_vars_) {
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// Use the accumulated grads_ by sharing the input with grads_.
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if (varbase->var_desc_->Name() == invar) {
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var->GetMutable<framework::LoDTensor>()->ShareDataWith(
|
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varbase->grads_->Get<framework::LoDTensor>());
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break;
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}
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}
|
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}
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|
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for (const std::string& outvar : grad_op_desc_->OutputArgumentNames()) {
|
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VLOG(3) << "grad outvar " << outvar;
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block_->FindRecursiveOrCreateVar(outvar);
|
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framework::Variable* var = scope->Var(outvar);
|
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if (!var->IsInitialized()) {
|
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framework::VarDesc* var_desc = block_->FindVar(outvar);
|
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if (var_desc->GetType() == framework::proto::VarType::LOD_TENSOR) {
|
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var->GetMutable<framework::LoDTensor>();
|
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} else {
|
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LOG(ERROR) << "tracer doesn't support yet";
|
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}
|
||||
}
|
||||
}
|
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grad_op_desc_->InferShape(*block_);
|
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grad_op_desc_->InferVarType(block_);
|
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std::unique_ptr<framework::OperatorBase> opbase =
|
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framework::OpRegistry::CreateOp(*grad_op_desc_);
|
||||
|
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opbase->Run(*scope, platform::CPUPlace());
|
||||
|
||||
// `ret` matches exactly with `input_vars_` of forward op.
|
||||
std::vector<Variable*> ret;
|
||||
for (size_t i = 0; i < input_vars_->size(); ++i) {
|
||||
bool found = false;
|
||||
for (const std::string& outvar : grad_op_desc_->OutputArgumentNames()) {
|
||||
Variable* var = scope->FindVar(outvar);
|
||||
VarBase* origin_var = (*input_vars_)[i];
|
||||
std::string orig_var = grad_to_var_->at(outvar);
|
||||
PADDLE_ENFORCE(origin_var->var_desc_->Name() == orig_var);
|
||||
VLOG(3) << "apply grad " << outvar << " with origin " << orig_var;
|
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origin_var->ApplyGrad(scope, var);
|
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found = true;
|
||||
ret.push_back(var);
|
||||
// TODO(panyx0718): There might be another outvar with the same name.
|
||||
// In that case, it doesn't matter the first one or the second one is
|
||||
// used.
|
||||
break;
|
||||
}
|
||||
if (!found) {
|
||||
ret.push_back(nullptr);
|
||||
}
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
void VarBase::RunBackward(framework::Scope* scope) {
|
||||
grads_ = CreateVariable(framework::GradVarName(var_desc_->Name()),
|
||||
var_->Get<framework::LoDTensor>().dims(), 1.0, scope,
|
||||
false);
|
||||
if (!pre_op_) return;
|
||||
Autograd(scope).RunBackward(this);
|
||||
}
|
||||
|
||||
} // namespace imperative
|
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} // namespace paddle
|
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@ -0,0 +1,102 @@
|
||||
// Copyright (c) 2018 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.
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <string>
|
||||
#include <vector>
|
||||
#include "paddle/fluid/framework/op_desc.h"
|
||||
#include "paddle/fluid/framework/operator.h"
|
||||
#include "paddle/fluid/framework/scope.h"
|
||||
#include "paddle/fluid/framework/var_desc.h"
|
||||
#include "paddle/fluid/platform/enforce.h"
|
||||
|
||||
namespace paddle {
|
||||
namespace imperative {
|
||||
|
||||
class OpBase;
|
||||
|
||||
class VarBase {
|
||||
public:
|
||||
VarBase()
|
||||
: pre_op_(nullptr),
|
||||
pre_op_out_idx_(-1),
|
||||
var_desc_(nullptr),
|
||||
var_(nullptr),
|
||||
grads_(nullptr) {}
|
||||
|
||||
virtual ~VarBase() {}
|
||||
|
||||
void ApplyGrad(framework::Scope* scope, framework::Variable* grad);
|
||||
|
||||
void RunBackward(framework::Scope* scope);
|
||||
|
||||
framework::LoDTensor& Grad();
|
||||
|
||||
OpBase* pre_op_;
|
||||
int pre_op_out_idx_;
|
||||
|
||||
framework::VarDesc* var_desc_;
|
||||
framework::Variable* var_;
|
||||
framework::Variable* grads_;
|
||||
};
|
||||
|
||||
class OpBase {
|
||||
public:
|
||||
OpBase()
|
||||
: input_vars_(new std::vector<VarBase*>()),
|
||||
output_vars_(new std::vector<VarBase*>()),
|
||||
pre_ops_(new std::vector<OpBase*>()),
|
||||
pre_ops_out_idx_(new std::vector<int>()),
|
||||
op_desc_(nullptr),
|
||||
grad_op_desc_(nullptr) {}
|
||||
|
||||
virtual ~OpBase() {
|
||||
delete input_vars_;
|
||||
delete output_vars_;
|
||||
|
||||
delete pre_ops_;
|
||||
delete pre_ops_out_idx_;
|
||||
|
||||
if (grad_op_desc_) delete grad_op_desc_;
|
||||
if (grad_to_var_) delete grad_to_var_;
|
||||
}
|
||||
|
||||
std::vector<framework::Variable*> ApplyGrad(framework::Scope* scope);
|
||||
|
||||
std::vector<VarBase*>* input_vars_;
|
||||
std::vector<VarBase*>* output_vars_;
|
||||
std::vector<OpBase*>* pre_ops_;
|
||||
std::vector<int>* pre_ops_out_idx_;
|
||||
framework::OpDesc* op_desc_;
|
||||
|
||||
framework::OpDesc* grad_op_desc_;
|
||||
std::unordered_map<std::string, std::string>* grad_to_var_;
|
||||
framework::BlockDesc* block_;
|
||||
};
|
||||
|
||||
class Layer {
|
||||
public:
|
||||
virtual ~Layer() {}
|
||||
|
||||
virtual std::vector<VarBase> Forward(const std::vector<VarBase>& inputs) {
|
||||
std::vector<VarBase> vars;
|
||||
return vars;
|
||||
}
|
||||
|
||||
virtual void Backward() { LOG(ERROR) << "To support customize"; }
|
||||
};
|
||||
|
||||
} // namespace imperative
|
||||
} // namespace paddle
|
||||
@ -0,0 +1,19 @@
|
||||
// Copyright (c) 2018 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.
|
||||
|
||||
#include "paddle/fluid/imperative/tracer.h"
|
||||
|
||||
namespace paddle {
|
||||
namespace imperative {} // namespace imperative
|
||||
} // namespace paddle
|
||||
@ -0,0 +1,128 @@
|
||||
// Copyright (c) 2018 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.
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <map>
|
||||
#include <string>
|
||||
#include <vector>
|
||||
|
||||
#include "paddle/fluid/framework/op_desc.h"
|
||||
#include "paddle/fluid/framework/op_registry.h"
|
||||
#include "paddle/fluid/framework/scope.h"
|
||||
#include "paddle/fluid/imperative/engine.h"
|
||||
#include "paddle/fluid/imperative/layer.h"
|
||||
|
||||
namespace paddle {
|
||||
namespace imperative {
|
||||
|
||||
void CreateGradOp(const framework::OpDesc& op_desc,
|
||||
const std::unordered_set<std::string>& no_grad_set,
|
||||
const std::vector<framework::BlockDesc*>& grad_sub_block,
|
||||
framework::OpDesc** grad_op_desc,
|
||||
std::unordered_map<std::string, std::string>* grad_to_var) {
|
||||
std::vector<std::unique_ptr<framework::OpDesc>> grad_op_descs =
|
||||
framework::OpInfoMap::Instance()
|
||||
.Get(op_desc.Type())
|
||||
.GradOpMaker()(op_desc, no_grad_set, grad_to_var, grad_sub_block);
|
||||
PADDLE_ENFORCE(grad_op_descs.size() == 1, "Only support 1 grad op now.");
|
||||
// TODO(panyx0718): Leak?
|
||||
*grad_op_desc = grad_op_descs[0].release();
|
||||
}
|
||||
|
||||
class Tracer {
|
||||
public:
|
||||
explicit Tracer(framework::BlockDesc* root_block) : root_block_(root_block) {
|
||||
root_scope_ = new framework::Scope();
|
||||
scopes_[root_block_] = root_scope_;
|
||||
}
|
||||
|
||||
virtual ~Tracer() { delete root_scope_; }
|
||||
|
||||
void Trace(OpBase* op, const std::vector<VarBase*>& inputs,
|
||||
const std::vector<VarBase*>& outputs,
|
||||
framework::BlockDesc* block) {
|
||||
framework::Scope* scope = GetScope(block);
|
||||
framework::OpDesc* op_desc = op->op_desc_;
|
||||
VLOG(3) << "tracer tracing " << op_desc->Type();
|
||||
op_desc->InferShape(*block);
|
||||
op_desc->InferVarType(block);
|
||||
std::unique_ptr<framework::OperatorBase> op_base =
|
||||
framework::OpRegistry::CreateOp(*op_desc);
|
||||
|
||||
*op->input_vars_ = inputs;
|
||||
for (VarBase* input : inputs) {
|
||||
const std::string vname = input->var_desc_->Name();
|
||||
framework::Variable* var = scope->Var(vname);
|
||||
input->var_ = var;
|
||||
if (!var->IsInitialized()) {
|
||||
framework::VarDesc* var_desc = block->FindVar(vname);
|
||||
if (var_desc->GetType() == framework::proto::VarType::LOD_TENSOR) {
|
||||
var->GetMutable<framework::LoDTensor>();
|
||||
} else {
|
||||
LOG(ERROR) << "tracer doesn't support yet";
|
||||
}
|
||||
}
|
||||
if (input->pre_op_) {
|
||||
op->pre_ops_->push_back(input->pre_op_);
|
||||
op->pre_ops_out_idx_->push_back(input->pre_op_out_idx_);
|
||||
} else {
|
||||
op->pre_ops_->push_back(nullptr);
|
||||
}
|
||||
}
|
||||
|
||||
*op->output_vars_ = outputs;
|
||||
for (size_t i = 0; i < outputs.size(); ++i) {
|
||||
const std::string vname = outputs[i]->var_desc_->Name();
|
||||
framework::Variable* var = scope->Var(vname);
|
||||
if (!var->IsInitialized()) {
|
||||
framework::VarDesc* var_desc = block->FindVar(vname);
|
||||
if (var_desc->GetType() == framework::proto::VarType::LOD_TENSOR) {
|
||||
var->GetMutable<framework::LoDTensor>();
|
||||
} else {
|
||||
LOG(ERROR) << "tracer doesn't support yet";
|
||||
}
|
||||
}
|
||||
outputs[i]->var_ = var;
|
||||
outputs[i]->pre_op_ = op;
|
||||
outputs[i]->pre_op_out_idx_ = i;
|
||||
}
|
||||
op_base->Run(*scope, platform::CPUPlace());
|
||||
framework::OpDesc* grad_op_desc;
|
||||
auto grad_to_var = new std::unordered_map<std::string, std::string>();
|
||||
CreateGradOp(*op_desc, {}, {block}, &grad_op_desc, grad_to_var);
|
||||
op->grad_op_desc_ = grad_op_desc;
|
||||
op->grad_to_var_ = grad_to_var;
|
||||
op->block_ = block;
|
||||
}
|
||||
|
||||
framework::Scope* GetScope(framework::BlockDesc* block) {
|
||||
if (scopes_.find(block) != scopes_.end()) {
|
||||
return scopes_.at(block);
|
||||
}
|
||||
framework::BlockDesc* parent_block = block->ParentBlock();
|
||||
PADDLE_ENFORCE(scopes_.find(parent_block) != scopes_.end());
|
||||
framework::Scope* scope = &scopes_[parent_block]->NewScope();
|
||||
scopes_[block] = scope;
|
||||
return scope;
|
||||
}
|
||||
|
||||
private:
|
||||
std::map<framework::BlockDesc*, framework::Scope*> scopes_;
|
||||
framework::BlockDesc* root_block_;
|
||||
framework::Scope* root_scope_;
|
||||
};
|
||||
|
||||
} // namespace imperative
|
||||
} // namespace paddle
|
||||
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Reference in new issue