Try to remove ParallelParameter.

It seems that is not used.

paddle/gserver/layers/Layer.h

@@ -14,20 +14,18 @@ limitations under the License. */
 
 #pragma once
 
-#include <paddle/parameter/Argument.h>
 #include <functional>
 #include <memory>
 #include "ModelConfig.pb.h"
 #include "paddle/function/Function.h"
+#include "paddle/gserver/activations/ActivationFunction.h"
 #include "paddle/math/CpuSparseMatrix.h"
+#include "paddle/parameter/Argument.h"
 #include "paddle/parameter/Parameter.h"
+#include "paddle/parameter/Weight.h"
 #include "paddle/utils/ClassRegistrar.h"
 #include "paddle/utils/Util.h"
 
-#include <paddle/parameter/ParallelParameter.h>
-#include <paddle/parameter/Weight.h>
-#include "paddle/gserver/activations/ActivationFunction.h"
-
 /// Macro for registering a layer type.
 /// Example: REGISTER_LAYER(crf_error, CRFDecodingErrorLayer);
 #define REGISTER_LAYER(__type_name, __class_name) \

paddle/parameter/ParallelParameter.cpp

-/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
-
-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 <fstream>
-#include "paddle/utils/Logging.h"
-
-#include "ParallelParameter.h"
-
-namespace paddle {
-
-UpdateFunction paramUpdateFunctions[UPDATE_TYPE_NUM] = {
-    nullptr,  // &ParallelParameter::singleUpdate,  /* single thread */
-    nullptr,  // &ParallelParameter::controlUpdate,    /* controller thread */
-    &ParallelParameter::majorUpdate, /* major thread */
-    &ParallelParameter::minorUpdate, /* minor thread */
-
-    nullptr,                         /* master */
-    &ParallelParameter::slaveUpdate, /* slave */
-};
-ParallelParameterPtr ParallelParameter::create(TrainerRole role,
-                                               ParameterPtr localParam,
-                                               int asyncCount) {
-  ParallelParameterPtr ptr = nullptr;
-  switch (role) {
-    case TRAINER_ROLE_CONTROL:
-    case TRAINER_ROLE_MAJOR:
-    case TRAINER_ROLE_MINOR:
-      ptr = std::make_shared<SyncParameter>(role, localParam);
-      break;
-    case TRAINER_ROLE_MASTER:
-    case TRAINER_ROLE_SLAVE:
-      ptr = std::make_shared<AsyncParameter>(role, asyncCount, localParam);
-      break;
-    default:
-      LOG(FATAL) << "unknown role " << role << "\n";
-  }
-  return ptr;
-}
-void ParallelParameter::syncUpdate(TrainerRole role, real learnRate) {
-  if (paramUpdateFunctions[role]) {
-    (this->*paramUpdateFunctions[role])(learnRate);
-  }
-}
-
-void SyncParameter::attachControlParam(ParallelParameterPtr controler) {
-  controlParam_ = controler;
-}
-
-void SyncParameter::attachMajorParam(ParallelParameterPtr partner) {
-  majorPartners_.push_back(partner);
-  if (role_ == TRAINER_ROLE_CONTROL) {
-    localParam_->setSharedCount(majorPartners_.size());
-  }
-  // partnerParam_ = partner;
-}
-
-void SyncParameter::attachMinorParam(ParallelParameterPtr partner,
-                                     int deviceId) {
-  minorPartners_.push_back(partner);
-  minorDeviceIds_.push_back(deviceId);
-  // partnerParam_ = partner;
-}
-
-void SyncParameter::waitAllMajorGradReady() {
-  for (size_t i = 0; i < majorPartners_.size(); i++) {
-    majorPartners_[i]->waitGradReady();
-    partnerParam_ = majorPartners_[i]->getLocalParameter();
-    VectorPtr localGrad = localParam_->getBuf(PARAMETER_GRADIENT);
-    VectorPtr patnrGrad = partnerParam_->getBuf(PARAMETER_GRADIENT);
-    if (FLAGS_use_gpu) hl_set_device(minorDeviceIds_[i]);
-    localGrad->add(*patnrGrad);
-  }
-}
-
-void SyncParameter::synchronizeParamter() {
-  valueSem_->wait();
-  if (role_ == TRAINER_ROLE_MINOR) {
-    /* copy the value from controller */
-    VectorPtr cntrlVec =
-        (controlParam_->getLocalParameter())->getBuf(PARAMETER_VALUE);
-    VectorPtr localVec = localParam_->getBuf(PARAMETER_VALUE);
-    localVec->copyFrom(*cntrlVec);
-
-    /* dispatch the value to major */
-    for (size_t i = 0; i < majorPartners_.size(); i++) {
-      VectorPtr majorVec =
-          (majorPartners_[i]->getLocalParameter())->getBuf(PARAMETER_VALUE);
-      majorVec->copyFrom(*localVec);
-      majorPartners_[i]->postValueReady();
-    }
-  }
-}
-
-void SyncParameter::singleUpdate(real learnRate) {
-  CHECK(role_ == TRAINER_ROLE_SINGLE);
-  localParam_->updateWithGradient(learnRate);
-}
-
-void SyncParameter::controlUpdate(const UpdateCallback &callBack) {
-  CHECK(role_ == TRAINER_ROLE_CONTROL);
-  CHECK(gradSem_ != NULL && valueSem_ != NULL);
-  CHECK(majorPartners_.size());
-
-  /* update */
-  if (callBack) {
-    callBack(localParam_.get());
-    localParam_->clearGradient();
-  }
-
-  for (size_t i = 0; i < minorPartners_.size(); i++) {
-    minorPartners_[i]->postValueReady();
-  }
-}
-
-void SyncParameter::majorUpdate(real learnRate) {
-  (void)learnRate;
-  CHECK(role_ == TRAINER_ROLE_MAJOR);
-  CHECK(gradSem_ != NULL && valueSem_ != NULL);
-  CHECK(minorPartners_.size() && controlParam_);
-
-  /* wait the minor-Gradient is ready */
-  for (size_t i = 0; i < minorPartners_.size(); i++) {
-    minorPartners_[i]->waitGradReady();
-    partnerParam_ = minorPartners_[i]->getLocalParameter();
-    VectorPtr localGrad = localParam_->getBuf(PARAMETER_GRADIENT);
-    VectorPtr minorGrad = partnerParam_->getBuf(PARAMETER_GRADIENT);
-    localGrad->add(*minorGrad);
-  }
-
-  /* notice the controller that the gradient is ready */
-  gradSem_->post();
-}
-
-void SyncParameter::minorUpdate(real learnRate) {
-  (void)learnRate;
-  CHECK(role_ == TRAINER_ROLE_MINOR);
-  CHECK(gradSem_ != NULL && valueSem_ != NULL);
-
-  // notice the major that the gradient is ready
-  gradSem_->post();
-}
-
-AsyncParameter::AsyncParameter(TrainerRole role,
-                               int asyncCount,
-                               ParameterPtr localParam)
-    : ParallelParameter(role, localParam) {
-  asyncCount_ = asyncCount;
-  accumCounter_ = 0;
-  gradientAccum_ = Vector::create(localParam->getSize(), localParam->useGpu());
-  gradientAccum_->zeroMem();
-}
-
-void AsyncParameter::slaveUpdate(real learnRate) {
-  /* increase the accumCounter_ */
-  accumCounter_++;
-
-  /* accumulate the gradient to the buffer */
-  VectorPtr grad = localParam_->getBuf(PARAMETER_GRADIENT);
-  gradientAccum_->add(*grad);
-
-  /* if need to be synchronized with the master */
-  if (accumCounter_ == asyncCount_) {
-    gradSem_->post();
-    // accumCounter_ = 0; NOTICE: the upper-function need to reset the counter
-  } else {  // self update
-    localParam_->updateWithGradient(learnRate);
-  }
-  localParam_->clearGradient();
-}
-
-bool AsyncParameter::masterUpdate(ParallelParameterPtr slaveParam,
-                                  const UpdateCallback &callback) {
-  CHECK(slaveParam && callback);
-
-  /* wait the slave is ready */
-  if (!slaveParam->timeWaitGradReady(5)) {
-    return false;
-  }
-
-  AsyncParameter *asyncParam = dynamic_cast<AsyncParameter *>(slaveParam.get());
-
-  /* get the accum-gradient to update local parameter */
-  VectorPtr slaveVec = asyncParam->getAccum();
-  localParam_->getBuf(PARAMETER_GRADIENT)->copyFrom(*slaveVec);
-  callback(localParam_.get());
-  // slaveVec->zeroMem();
-
-  /* copy the newest parameter-value to the slave */
-  slaveVec = (slaveParam->getLocalParameter())->getBuf(PARAMETER_VALUE);
-  slaveVec->copyFrom(*(localParam_->getBuf(PARAMETER_VALUE)));
-
-  /* release the semphore */
-  slaveParam->postValueReady();
-
-  return true;
-}
-
-}  // namespace paddle

paddle/parameter/ParallelParameter.h

-/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
-
-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 <stdint.h>
-
-#include <sys/time.h>
-#include <unistd.h>
-#include <iostream>
-#include <string>
-#include <vector>
-
-#include "hl_gpu.h"
-#include "paddle/math/Vector.h"
-#include "paddle/parameter/Parameter.h"
-#include "paddle/parameter/ParameterUpdateFunctions.h"
-#include "paddle/utils/Common.h"
-#include "paddle/utils/Flags.h"
-#include "paddle/utils/Locks.h"
-
-#include "ParameterConfig.pb.h"
-
-namespace paddle {
-
-class ParallelParameter;
-class SyncParameter;
-class AsyncParameter;
-
-typedef std::shared_ptr<ParallelParameter> ParallelParameterPtr;
-
-const int UPDATE_TYPE_NUM = 32;
-
-/**
- * TrainRole denotes the role of current training, different roles have
- * different jobs.
- *
- * control, major, minor are three kinds of role to support mutiple GPUs
- * parallel SGD training. SM on GPU card has two groups, each group
- * consist of a major and a minor.
- *
- * @param    single  single GPU card single thread training.
- *
- *
- * @param    control current parameter updates via control role,
- *                   not participate in real training. control role is
- *                   responsible for merging all major's gradient and
- *                   update parameter value.
- *
- * @param    major   major role paticipates in real training, when local
- *                   gradient is ready, merge its corresponding minor's
- *                   gradient and notify controller: this group's gradient
- *                   is already ready.
- *
- * @param    minor   minor role participates in real training, when local
- *                   gradient is ready, only notify its corresponding major.
- *                   In order to maximum apportion jobs, after controller
- *                   updates the paramemter value, each group's minior
- *                   reponses to dispatch the latest model into local and
- *                   major.
- */
-enum TrainerRole {
-  TRAINER_ROLE_SINGLE,
-  TRAINER_ROLE_CONTROL,
-  TRAINER_ROLE_MAJOR,
-  TRAINER_ROLE_MINOR,
-  TRAINER_ROLE_MASTER,
-  TRAINER_ROLE_SLAVE
-};
-typedef void (ParallelParameter::*UpdateFunction)(real learnRate);
-
-class ParallelParameter {
-public:
-  static ParallelParameterPtr create(TrainerRole role,
-                                     ParameterPtr localParam,
-                                     int asyncCount = 1);
-
-  ParallelParameter(TrainerRole role, ParameterPtr localParam) {
-    role_ = role;
-    gradSem_.reset(new Semaphore(0));
-    valueSem_.reset(new Semaphore(0));
-    localParam_ = localParam;
-  }
-
-  virtual ~ParallelParameter() {}
-
-  ParameterPtr getLocalParameter() { return localParam_; }
-  bool timeWaitGradReady(int sec) {
-    struct timespec ts;
-    ts.tv_nsec = 0;
-    ts.tv_sec = time(NULL) + sec;
-    return gradSem_->timeWait(&ts);
-  }
-  void waitGradReady() { gradSem_->wait(); }
-  void postValueReady() { valueSem_->post(); }
-
-  void syncUpdate(TrainerRole role, real learnRate);
-
-  virtual void synchronizeParamter() = 0;
-
-  /**
-   * for synchronous
-   */
-  virtual void singleUpdate(real learnRate) { (void)learnRate; }
-
-  virtual void controlUpdate(const UpdateCallback& callback) { (void)callback; }
-
-  virtual void majorUpdate(real learnRate) { (void)learnRate; }
-
-  virtual void minorUpdate(real learnRate) { (void)learnRate; }
-
-  /**
-   * for asynchronous
-   */
-  virtual void slaveUpdate(real learnRate) { (void)learnRate; }
-
-protected:
-  TrainerRole role_;
-  ParameterPtr localParam_;
-  std::unique_ptr<Semaphore>
-      gradSem_;  /// wether the local parameter-gradient is ready
-  std::unique_ptr<Semaphore>
-      valueSem_;  /// wether the local parameter-value is updated
-};
-
-/**
- * this class is designed for multi-threading training.
- *
- * "Synchronous" means multiple GPUs calculate 1/4 mini-Batch,
- * but will get only one gradient
- */
-class SyncParameter : public ParallelParameter {
-public:
-  SyncParameter(TrainerRole role, ParameterPtr localParam)
-      : ParallelParameter(role, localParam) {
-    controlParam_ = nullptr;
-    majorPartners_.clear();
-    minorPartners_.clear();
-  }
-  ~SyncParameter() {
-    majorPartners_.clear();
-    minorPartners_.clear();
-  }
-  void attachControlParam(ParallelParameterPtr controler);
-
-  void attachMajorParam(ParallelParameterPtr partner);
-
-  void attachMinorParam(ParallelParameterPtr partner, int deviceId);
-
-  void waitAllMajorGradReady();
-
-  void synchronizeParamter();
-
-  void singleUpdate(real learnRate);
-
-  void controlUpdate(const UpdateCallback& callback);
-
-  void majorUpdate(real learnRate);
-
-  void minorUpdate(real learnRate);
-
-  std::vector<ParallelParameterPtr>& getMajorPartners() {
-    return majorPartners_;
-  }
-
-  std::vector<ParallelParameterPtr>& getMinorPartners() {
-    return minorPartners_;
-  }
-
-private:
-  // The following variables are used in a multithreaded training situation
-  // partnerParam_ is local-parameter's partner
-  // controlParam_ is the controller-thread 's parameter
-  ParameterPtr partnerParam_;
-  std::vector<ParallelParameterPtr> majorPartners_;
-  std::vector<ParallelParameterPtr> minorPartners_;
-  std::vector<int> minorDeviceIds_;
-  ParallelParameterPtr controlParam_;
-};
-
-class AsyncParameter : public ParallelParameter {
-public:
-  AsyncParameter(TrainerRole role, int asyncCount, ParameterPtr localParam);
-
-  void clearCounter() { accumCounter_ = 0; }
-
-  VectorPtr getAccum() { return gradientAccum_; }
-
-  void synchronizeParamter() {
-    if (accumCounter_ == asyncCount_) {
-      valueSem_->wait();
-      clearCounter();
-      gradientAccum_->zeroMem();
-    }
-  }
-
-  /**
-   * When asynchronous training, update strategy including slave and master.
-   *
-   * slave: If in range asyncCount, adopting self-update method.
-   *        If beyond asyncCount, waiting for master to update.
-   */
-  void slaveUpdate(real learnRate);
-
-  /**
-   * When asynchronous training, update strategy including slave and master.
-   *
-   * master: it only polls slaves, do not training data.
-   *         If slave's gradient is ready, fetch it.
-   *         Update master's parameter, then copy it into
-   *         corresponding slave.
-   */
-  bool masterUpdate(ParallelParameterPtr slaveParam,
-                    const UpdateCallback& callback);
-
-private:
-  /**
-   * When asynchronous training, every aysnc trainer needs to
-   * accumulate a number of batch gradient.
-   *
-   * gradientAccum_ is used to save the sum of gradients.
-   */
-  VectorPtr gradientAccum_;
-
-  /// Asynchronous count.
-  int asyncCount_;
-  /// Accumulate counter of current gradients.
-  int accumCounter_;
-};
-
-typedef std::map<std::string, ParallelParameterPtr> ParallelParameterMap;
-
-}  // namespace paddle

paddle/parameter/Parameter.cpp

@@ -271,55 +271,6 @@ SparsePrefetchRowCpuMatrix* Parameter::getPrefetchMatrix() {
   return nullptr;
 }
 
-void Parameter::updateWithGradient(real learningRate) {
-  sgdUpdate(learningRate * config_.learning_rate(),
-            config_.momentum(),
-            config_.decay_rate(),
-            bufs_[PARAMETER_VALUE].get(),
-            bufs_[PARAMETER_GRADIENT].get(),
-            bufs_[PARAMETER_MOMENTUM].get());
-}
-
-void Parameter::updateWithGradient(real learningRate,
-                                   MatrixPtr gradMat,
-                                   IVectorPtr t0,
-                                   int currentTime,
-                                   bool fini) {
-  SparseRowCpuMatrix* sparseMat =
-      dynamic_cast<SparseRowCpuMatrix*>(gradMat.get());
-  CHECK(sparseMat);
-  CHECK_EQ(config_.momentum(), 0.0f)
-      << "not support momentum in sparse input sgd";
-  bool useL1 = (config_.decay_rate_l1() != 0.0f);
-  sparseMat->sgdUpdate(*bufs_[PARAMETER_VALUE],
-                       *t0,
-                       learningRate * config_.learning_rate(),
-                       currentTime,
-                       useL1 ? config_.decay_rate_l1() : config_.decay_rate(),
-                       useL1,
-                       fini);
-}
-
-void Parameter::updateWithGradient(real learningRate,
-                                   VectorPtr gradVec,
-                                   bool normalUpdate) {
-  if (normalUpdate) {
-    sgdUpdate(learningRate * config_.learning_rate(),
-              config_.momentum(),
-              config_.decay_rate(),
-              bufs_[PARAMETER_VALUE].get(),
-              gradVec.get(),
-              bufs_[PARAMETER_MOMENTUM].get());
-  } else {
-    size_t size = gradVec->getSize();
-    real* mom = bufs_[PARAMETER_MOMENTUM]->getData();
-    real* grad = gradVec->getData();
-    real* value = bufs_[PARAMETER_VALUE]->getData();
-    hl_matrix_add(mom, grad, mom, 1, size, 1.0f, learningRate);
-    hl_matrix_add(value, grad, value, 1, size, 1.0f, learningRate);
-  }
-}
-
 void Parameter::incUpdate(const UpdateCallback& callback) {
   // Static parameter is fixed, and does not need to be updated
   if (isStatic()) {

paddle/parameter/Parameter.h

@@ -223,29 +223,6 @@ public:
 
   bool isValueUpdated() const { return updated_; }
 
-  /**
-   * Update bufs_[PARAMETER_VALUE] using bufs_[PARAMETER_GRADIENT]
-   */
-  void updateWithGradient(real learningRate);
-
-  /**
-   * Update bufs_[PARAMETER_VALUE] using sparse row grad matrix.
-   *
-   * @see SparseRowCpuMatrix::sgdUpdate for more information.
-   */
-  void updateWithGradient(real learningRate,
-                          MatrixPtr gradMat,
-                          IVectorPtr t0,
-                          int currentTime,
-                          bool fini = false);
-
-  /**
-   * This function is used to calculate multiple gpus, but only as a candidate
-   */
-  void updateWithGradient(real learningRate,
-                          VectorPtr grad,
-                          bool normalUpdate = true);
-
   /**
    * Save parameter value to a file
    */