diff --git a/paddle/fluid/framework/device_worker.h b/paddle/fluid/framework/device_worker.h
index 9da23ee29d7fd699f535394e2c8597553aa51a4a..3862b23e2d5569964e9610146099454257f5b423 100644
--- a/paddle/fluid/framework/device_worker.h
+++ b/paddle/fluid/framework/device_worker.h
@@ -547,6 +547,7 @@ class PSGPUWorker : public HogwildWorker {
   virtual ~PSGPUWorker() {}
   virtual void Initialize(const TrainerDesc& desc);
   virtual void TrainFiles();
+  virtual void TrainFilesWithProfiler();
   virtual void SetNeedDump(bool need_dump_field);
   virtual void SetChannelWriter(ChannelObject<std::string>* queue);
   virtual void SetWorkerNum(int num) { worker_num_ = num; }
@@ -556,7 +557,6 @@ class PSGPUWorker : public HogwildWorker {
   virtual void ProduceTasks() override;
   virtual void SetStream(const gpuStream_t stream) { copy_stream_ = stream; }
   virtual void SetEvent(const gpuEvent_t event) { event_ = event; }
-  virtual void TrainFilesWithProfiler() {}
   void ResetStat();
 
  protected:
@@ -618,6 +618,7 @@ class PSGPUWorker : public HogwildWorker {
   gpuStream_t copy_stream_;
   int batch_cnt_{0};
   std::atomic<int> done_cnt_{0};
+  platform::DeviceContext* dev_ctx_ = nullptr;
 
   double total_time_;
   double read_time_;
diff --git a/paddle/fluid/framework/fleet/heter_context.h b/paddle/fluid/framework/fleet/heter_context.h
index fc987b523d559a2559050602c4b8e98692804c1c..a02931b3f5c28a6e8e09866f3352109b7fe91adb 100644
--- a/paddle/fluid/framework/fleet/heter_context.h
+++ b/paddle/fluid/framework/fleet/heter_context.h
@@ -66,18 +66,19 @@ class HeterContext {
       mutex_[i] = new std::mutex();
     }
   }
-  void batch_add_keys(const std::vector<std::vector<uint64_t>>& thread_keys) {
+  void batch_add_keys(
+      const std::vector<std::unordered_set<uint64_t>>& thread_keys) {
     assert(thread_keys.size() == feature_keys_.size());
 
     for (uint32_t i = 0; i < shard_num_; i++) {
       int idx = 0;
       idx = feature_keys_[i].size();
       feature_keys_[i].resize(feature_keys_[i].size() + thread_keys[i].size());
-      for (uint64_t j = 0; j < thread_keys[i].size(); j++) {
-        feature_keys_[i][idx + j] = thread_keys[i][j];
-      }
+      std::copy(thread_keys[i].begin(), thread_keys[i].end(),
+                feature_keys_[i].begin() + idx);
     }
   }
+
   void UniqueKeys() {
     std::vector<std::thread> threads;
     auto unique_func = [this](int i) {
diff --git a/paddle/fluid/framework/fleet/heter_ps/hashtable.h b/paddle/fluid/framework/fleet/heter_ps/hashtable.h
index 2aa00e84e1599bfa09b013dfb00bbda1299fe9e6..e5c0972763bede000961e970390c64431ac3cb22 100644
--- a/paddle/fluid/framework/fleet/heter_ps/hashtable.h
+++ b/paddle/fluid/framework/fleet/heter_ps/hashtable.h
@@ -55,6 +55,8 @@ class HashTable {
   void update(const KeyType* d_keys, const GradType* d_grads, size_t len,
               Sgd sgd, gpuStream_t stream);
 
+  int size() { return container_->size(); }
+
  private:
   TableContainer<KeyType, ValType>* container_;
   int BLOCK_SIZE_{256};
diff --git a/paddle/fluid/framework/fleet/heter_ps/heter_comm.h b/paddle/fluid/framework/fleet/heter_ps/heter_comm.h
index 77591c6df22a5767f9c5dd3c58a01ad798a6e5d1..0e38ebbd7f4e7280d5571ffd216143b277f063d6 100644
--- a/paddle/fluid/framework/fleet/heter_ps/heter_comm.h
+++ b/paddle/fluid/framework/fleet/heter_ps/heter_comm.h
@@ -118,6 +118,12 @@ class HeterComm {
     std::vector<Node> nodes_;
   };
 
+  struct CopyTask {
+    Path* path;
+    int step;
+    CopyTask(Path* path_, int step_) : path(path_), step(step_) {}
+  };
+
   struct LocalStorage {
     LocalStorage() {}
     void init(int size, int dev_id) {
@@ -160,9 +166,10 @@ class HeterComm {
   void create_storage(
       int start_index, int end_index, int keylen, int vallen,
       std::vector<std::shared_ptr<memory::Allocation>>& local_strorage);
-  void walk_to_src(int start_index, int end_index, char* src_val);
-  void walk_to_dest(int start_index, int end_index, char* src_key,
-                    char* src_val);
+  void walk_to_dest(int start_index, int gpu_num, int* h_left, int* h_right,
+                    KeyType* src_key, GradType* src_val);
+  void walk_to_src(int start_index, int gpu_num, int* h_left, int* h_right,
+                   ValType* src_val);
 
  private:
   using Table = HashTable<KeyType, ValType>;
diff --git a/paddle/fluid/framework/fleet/heter_ps/heter_comm_inl.h b/paddle/fluid/framework/fleet/heter_ps/heter_comm_inl.h
index 4e4563daa19faa0c7b9c484454fdb7e0c53d53a1..2f1c809c01eaadcad8c3406e882acafaadb09134 100644
--- a/paddle/fluid/framework/fleet/heter_ps/heter_comm_inl.h
+++ b/paddle/fluid/framework/fleet/heter_ps/heter_comm_inl.h
@@ -12,6 +12,8 @@ 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 <queue>
+
 #ifdef PADDLE_WITH_PSLIB
 namespace paddle {
 namespace framework {
@@ -182,53 +184,105 @@ void HeterComm<KeyType, ValType, GradType>::create_storage(
 }
 
 template <typename KeyType, typename ValType, typename GradType>
-void HeterComm<KeyType, ValType, GradType>::walk_to_dest(int start_index,
-                                                         int end_index,
-                                                         char* src_key,
-                                                         char* src_val) {
+void HeterComm<KeyType, ValType, GradType>::walk_to_dest(
+    int start_index, int gpu_num, int* h_left, int* h_right, KeyType* src_key,
+    GradType* src_val) {
   int need_copy_val = 0;
   if (src_val) {
     need_copy_val = 1;
   }
-  auto& nodes = path_[start_index][end_index].nodes_;
-  for (size_t i = 0; i < nodes.size(); ++i) {
-    cudaMemcpyAsync(nodes[i].key_storage, src_key, nodes[i].key_bytes_len,
-                    cudaMemcpyDefault, nodes[i].in_stream);
+  std::queue<CopyTask> que;
+  for (int i = 0; i < gpu_num; i++) {
+    if (h_left[i] == -1 || h_right[i] == -1) {
+      continue;
+    }
+    int size = path_[start_index][i].nodes_.size();
+    auto& node = path_[start_index][i].nodes_[0];
+    CopyTask t(&path_[start_index][i], 0);
+    que.push(t);
+    cudaMemcpyAsync(node.key_storage,
+                    reinterpret_cast<char*>(src_key + h_left[i]),
+                    node.key_bytes_len, cudaMemcpyDefault, node.in_stream);
     if (need_copy_val) {
-      cudaMemcpyAsync(nodes[i].val_storage, src_val, nodes[i].val_bytes_len,
-                      cudaMemcpyDefault, nodes[i].in_stream);
+      cudaMemcpyAsync(node.val_storage,
+                      reinterpret_cast<char*>(src_val + h_left[i]),
+                      node.val_bytes_len, cudaMemcpyDefault, node.in_stream);
+    }
+  }
+  while (!que.empty()) {
+    CopyTask& cur_task = que.front();
+    que.pop();
+    if (cur_task.path->nodes_[cur_task.step].sync) {
+      cudaStreamSynchronize(cur_task.path->nodes_[cur_task.step].in_stream);
     }
-    if (nodes[i].sync) {
-      cudaStreamSynchronize(nodes[i].in_stream);
+    if (cur_task.step != cur_task.path->nodes_.size() - 1) {
+      int cur_step = cur_task.step;
+      CopyTask c(cur_task.path, cur_step + 1);
+      que.push(c);
+      cudaMemcpyAsync(cur_task.path->nodes_[cur_step + 1].key_storage,
+                      cur_task.path->nodes_[cur_step].key_storage,
+                      cur_task.path->nodes_[cur_step + 1].key_bytes_len,
+                      cudaMemcpyDefault,
+                      cur_task.path->nodes_[cur_step + 1].in_stream);
+      if (need_copy_val) {
+        cudaMemcpyAsync(cur_task.path->nodes_[cur_step + 1].val_storage,
+                        cur_task.path->nodes_[cur_step].val_storage,
+                        cur_task.path->nodes_[cur_step + 1].val_bytes_len,
+                        cudaMemcpyDefault,
+                        cur_task.path->nodes_[cur_step + 1].in_stream);
+      }
     }
-    // cudaStreamSynchronize(nodes[i].in_stream);
-    src_key = nodes[i].key_storage;
-    src_val = nodes[i].val_storage;
   }
 }
 
 template <typename KeyType, typename ValType, typename GradType>
-void HeterComm<KeyType, ValType, GradType>::walk_to_src(int start_index,
-                                                        int end_index,
-                                                        char* src_val) {
-  auto& nodes = path_[start_index][end_index].nodes_;
-  int len = nodes.size();
-  char* start = NULL;
-  for (int i = len - 1; i >= 0; --i) {
-    if (start == NULL) {
-      start = nodes[i].val_storage;
+void HeterComm<KeyType, ValType, GradType>::walk_to_src(
+    int start_index, int gpu_num, int* h_left, int* h_right, ValType* src_val) {
+  std::queue<CopyTask> que;
+  for (int i = 0; i < gpu_num; i++) {
+    if (h_left[i] == -1 || h_right[i] == -1) {
       continue;
     }
-    cudaMemcpyAsync(nodes[i].val_storage, start, nodes[i].val_bytes_len,
-                    cudaMemcpyDefault, nodes[i].out_stream);
-    if (nodes[i].sync) {
-      cudaStreamSynchronize(nodes[i].out_stream);
+    int cur_step = path_[start_index][i].nodes_.size() - 1;
+    auto& node = path_[start_index][i].nodes_[cur_step];
+    if (cur_step == 0) {
+      cudaMemcpyAsync(reinterpret_cast<char*>(src_val + h_left[i]),
+                      node.val_storage, node.val_bytes_len, cudaMemcpyDefault,
+                      node.out_stream);
+    } else {
+      CopyTask t(&path_[start_index][i], cur_step - 1);
+      que.push(t);
+      cudaMemcpyAsync(path_[start_index][i].nodes_[cur_step - 1].val_storage,
+                      node.val_storage,
+                      path_[start_index][i].nodes_[cur_step - 1].val_bytes_len,
+                      cudaMemcpyDefault,
+                      path_[start_index][i].nodes_[cur_step - 1].out_stream);
+    }
+  }
+  while (!que.empty()) {
+    CopyTask& cur_task = que.front();
+    que.pop();
+    int cur_step = cur_task.step;
+    if (cur_task.path->nodes_[cur_step].sync) {
+      cudaStreamSynchronize(cur_task.path->nodes_[cur_step].out_stream);
+    }
+    if (cur_step > 0) {
+      CopyTask c(cur_task.path, cur_step - 1);
+      que.push(c);
+      cudaMemcpyAsync(cur_task.path->nodes_[cur_step - 1].val_storage,
+                      cur_task.path->nodes_[cur_step].val_storage,
+                      cur_task.path->nodes_[cur_step - 1].val_bytes_len,
+                      cudaMemcpyDefault,
+                      cur_task.path->nodes_[cur_step - 1].out_stream);
+    } else if (cur_step == 0) {
+      int end_index = cur_task.path->nodes_.back().gpu_num;
+      cudaMemcpyAsync(reinterpret_cast<char*>(src_val + h_left[end_index]),
+                      cur_task.path->nodes_[cur_step].val_storage,
+                      cur_task.path->nodes_[cur_step].val_bytes_len,
+                      cudaMemcpyDefault,
+                      cur_task.path->nodes_[cur_step].out_stream);
     }
-    start = nodes[i].val_storage;
   }
-  cudaMemcpyAsync(src_val, nodes[0].val_storage, nodes[0].val_bytes_len,
-                  cudaMemcpyDefault, nodes[0].out_stream);
-  // cudaStreamSynchronize(nodes[0].out_stream);
 }
 
 template <typename KeyType, typename ValType, typename GradType>
@@ -462,14 +516,7 @@ void HeterComm<KeyType, ValType, GradType>::pull_sparse(int num,
                    shard_len * sizeof(ValType), local_storage);
   }
 
-  for (int i = 0; i < total_gpu; ++i) {
-    int shard_len = h_right[i] - h_left[i] + 1;
-    if (h_left[i] == -1 || h_right[i] == -1) {
-      continue;
-    }
-    walk_to_dest(num, i, reinterpret_cast<char*>(d_shard_keys_ptr + h_left[i]),
-                 NULL);
-  }
+  walk_to_dest(num, total_gpu, h_left, h_right, d_shard_keys_ptr, NULL);
 
   for (int i = 0; i < total_gpu; ++i) {
     if (h_left[i] == -1) {
@@ -486,14 +533,7 @@ void HeterComm<KeyType, ValType, GradType>::pull_sparse(int num,
     cudaStreamSynchronize(resource_->remote_stream(i));
   }
 
-  for (int i = 0; i < total_gpu; ++i) {
-    int shard_len = h_right[i] - h_left[i] + 1;
-    if (h_left[i] == -1 || h_right[i] == -1) {
-      continue;
-    }
-    platform::CUDADeviceGuard guard(resource_->dev_id(i));
-    walk_to_src(num, i, reinterpret_cast<char*>(d_shard_vals_ptr + h_left[i]));
-  }
+  walk_to_src(num, total_gpu, h_left, h_right, d_shard_vals_ptr);
 
   for (int i = 0; i < total_gpu; ++i) {
     auto& node = path_[num][i].nodes_.front();
@@ -561,7 +601,6 @@ void HeterComm<KeyType, ValType, GradType>::push_sparse(int gpu_num,
              cudaMemcpyDeviceToHost);
 
   std::vector<std::shared_ptr<memory::Allocation>> local_storage;
-
   for (int i = 0; i < total_gpu; ++i) {
     int shard_len = h_right[i] - h_left[i] + 1;
     if (h_left[i] == -1 || h_right[i] == -1) {
@@ -571,15 +610,8 @@ void HeterComm<KeyType, ValType, GradType>::push_sparse(int gpu_num,
                    shard_len * sizeof(GradType), local_storage);
   }
 
-  for (int i = 0; i < total_gpu; ++i) {
-    int shard_len = h_right[i] - h_left[i] + 1;
-    if (h_left[i] == -1 || h_right[i] == -1) {
-      continue;
-    }
-    walk_to_dest(gpu_num, i,
-                 reinterpret_cast<char*>(d_shard_keys_ptr + h_left[i]),
-                 reinterpret_cast<char*>(d_shard_grads_ptr + h_left[i]));
-  }
+  walk_to_dest(gpu_num, total_gpu, h_left, h_right, d_shard_keys_ptr,
+               d_shard_grads_ptr);
 
   for (int i = 0; i < total_gpu; ++i) {
     if (h_left[i] == -1 || h_right[i] == -1) {
diff --git a/paddle/fluid/framework/fleet/ps_gpu_wrapper.cc b/paddle/fluid/framework/fleet/ps_gpu_wrapper.cc
index 516f09a9ef26e50dfe7ce5a00855b3dae383ff46..4274876c9975e5b16824af4c799bf81228659d92 100644
--- a/paddle/fluid/framework/fleet/ps_gpu_wrapper.cc
+++ b/paddle/fluid/framework/fleet/ps_gpu_wrapper.cc
@@ -65,9 +65,6 @@ void PSGPUWrapper::BuildTask(std::shared_ptr<HeterContext> gpu_task,
   for (int i = 0; i < thread_keys_thread_num_; i++) {
     thread_keys_[i].resize(thread_keys_shard_num_);
     for (int j = 0; j < thread_keys_shard_num_; j++) {
-      thread_keys_[i][j].reserve(2 * max_fea_num_per_pass_ /
-                                 thread_keys_shard_num_ /
-                                 thread_keys_thread_num_);
     }
   }
   const std::deque<Record>& vec_data = input_channel->GetData();
@@ -84,7 +81,7 @@ void PSGPUWrapper::BuildTask(std::shared_ptr<HeterContext> gpu_task,
       for (const auto feasign : feasign_v) {
         uint64_t cur_key = feasign.sign().uint64_feasign_;
         int shard_id = cur_key % thread_keys_shard_num_;
-        this->thread_keys_[i][shard_id].push_back(cur_key);
+        this->thread_keys_[i][shard_id].insert(cur_key);
       }
     }
   };
@@ -123,7 +120,7 @@ void PSGPUWrapper::BuildTask(std::shared_ptr<HeterContext> gpu_task,
     VLOG(3) << "GpuPs shard: " << i << " key len: " << local_keys[i].size();
     local_ptr[i].resize(local_keys[i].size());
   }
-
+  timeline.Start();
   auto ptl_func = [this, &local_keys, &local_ptr, &table_id,
                    &fleet_ptr](int i) {
     size_t key_size = local_keys[i].size();
@@ -149,7 +146,8 @@ void PSGPUWrapper::BuildTask(std::shared_ptr<HeterContext> gpu_task,
     t.join();
   }
   timeline.Pause();
-  VLOG(1) << "GpuPs pull sparse cost " << timeline.ElapsedSec() << " seconds.";
+  VLOG(1) << "pull sparse from CpuPS into GpuPS cost " << timeline.ElapsedSec()
+          << " seconds.";
 
   timeline.Start();
   auto build_func = [device_num, &local_keys, &local_ptr, &device_keys,
@@ -225,6 +223,7 @@ void PSGPUWrapper::BuildGPUPS(uint64_t table_id, int feature_dim) {
   size_t size_max = 0;
   for (int i = 0; i < device_num; i++) {
     feature_keys_count[i] = gpu_task->device_keys_[i].size();
+    VLOG(1) << i << " card contains feasign nums: " << feature_keys_count[i];
     size_max = std::max(size_max, feature_keys_count[i]);
   }
   if (HeterPs_) {
@@ -314,7 +313,7 @@ void PSGPUWrapper::PullSparse(const paddle::platform::Place& place,
         "GpuPs: PullSparse Only Support CUDAPlace Now."));
   }
   all_timer.Pause();
-  VLOG(1) << "GpuPs PullSparse total costs: " << all_timer.ElapsedSec()
+  VLOG(3) << "GpuPs PullSparse total costs: " << all_timer.ElapsedSec()
           << " s, of which GPUPS costs: " << pull_gpups_timer.ElapsedSec()
           << " s";
   VLOG(3) << "End PullSparse";
@@ -360,7 +359,7 @@ void PSGPUWrapper::PushSparseGrad(const paddle::platform::Place& place,
         "GPUPS: PushSparseGrad Only Support CUDAPlace Now."));
   }
   all_timer.Pause();
-  VLOG(1) << "PushSparseGrad total cost: " << all_timer.ElapsedSec()
+  VLOG(3) << "PushSparseGrad total cost: " << all_timer.ElapsedSec()
           << " s, of which GPUPS cost: " << push_gpups_timer.ElapsedSec()
           << " s";
   VLOG(3) << "End PushSparseGrad";
diff --git a/paddle/fluid/framework/fleet/ps_gpu_wrapper.h b/paddle/fluid/framework/fleet/ps_gpu_wrapper.h
index fd3323d9d4764e2cdd22f8a7bc6699fa328968dd..ef586b41fe05d2f21e1469dcd7bcce3d77fc9651 100644
--- a/paddle/fluid/framework/fleet/ps_gpu_wrapper.h
+++ b/paddle/fluid/framework/fleet/ps_gpu_wrapper.h
@@ -227,7 +227,7 @@ class PSGPUWrapper {
   std::vector<int> heter_devices_;
   std::unordered_set<std::string> gpu_ps_config_keys_;
   HeterObjectPool<HeterContext> gpu_task_pool_;
-  std::vector<std::vector<std::vector<uint64_t>>> thread_keys_;
+  std::vector<std::vector<std::unordered_set<uint64_t>>> thread_keys_;
   int thread_keys_thread_num_ = 37;
   int thread_keys_shard_num_ = 37;
   uint64_t max_fea_num_per_pass_ = 5000000000;
diff --git a/paddle/fluid/framework/ps_gpu_trainer.cc b/paddle/fluid/framework/ps_gpu_trainer.cc
index 962f666478cf0aa7418be11c1f17391038db531d..e77932fa5f226518f7be4177488d6cc55f2fce06 100644
--- a/paddle/fluid/framework/ps_gpu_trainer.cc
+++ b/paddle/fluid/framework/ps_gpu_trainer.cc
@@ -131,8 +131,13 @@ void PSGPUTrainer::InitOtherEnv(const ProgramDesc& main_program) {
 
 void PSGPUTrainer::Run() {
   for (size_t thidx = 0; thidx < places_.size(); ++thidx) {
-    threads_.push_back(
-        std::thread(&DeviceWorker::TrainFiles, workers_[thidx].get()));
+    if (!debug_) {
+      threads_.push_back(
+          std::thread(&DeviceWorker::TrainFiles, workers_[thidx].get()));
+    } else {
+      threads_.push_back(std::thread(&DeviceWorker::TrainFilesWithProfiler,
+                                     workers_[thidx].get()));
+    }
   }
 }
 
diff --git a/paddle/fluid/framework/ps_gpu_worker.cc b/paddle/fluid/framework/ps_gpu_worker.cc
index 1540679e00c97dc9384d754ff915d82aa621ca5b..2597901d91f36bab7e6a1e3553d8c43bb7a686f8 100644
--- a/paddle/fluid/framework/ps_gpu_worker.cc
+++ b/paddle/fluid/framework/ps_gpu_worker.cc
@@ -33,6 +33,7 @@ namespace framework {
 
 void PSGPUWorker::Initialize(const TrainerDesc& desc) {
   param_ = desc.downpour_param();
+  dev_ctx_ = platform::DeviceContextPool::Instance().Get(place_);
   mpi_rank_ = desc.mpi_rank();
   trainer_desc_ = desc;
   /*
@@ -177,6 +178,81 @@ void PSGPUWorker::TrainFiles() {
   return;
 }
 
+void PSGPUWorker::TrainFilesWithProfiler() {
+  platform::SetNumThreads(1);
+  VLOG(1) << "Begin to train files with profiler";
+  device_reader_->Start();
+  std::vector<double> op_total_time;
+  std::vector<std::string> op_name;
+  for (auto& op : ops_) {
+    bool need_skip = false;
+    for (auto t = 0u; t < skip_ops_.size(); ++t) {
+      if (op->Type().find(skip_ops_[t]) != std::string::npos) {
+        need_skip = true;
+        break;
+      }
+    }
+    if (!need_skip) {
+      op_name.push_back(op->Type());
+    }
+  }
+
+  VLOG(3) << "op name size: " << op_name.size();
+  op_total_time.resize(op_name.size());
+  for (size_t i = 0; i < op_total_time.size(); ++i) {
+    op_total_time[i] = 0.0;
+  }
+  platform::Timer timeline;
+  double total_time = 0.0;
+  double read_time = 0.0;
+  int total_ins_num = 0;
+  int cur_batch;
+  timeline.Start();
+  while ((cur_batch = device_reader_->Next()) > 0) {
+    total_ins_num += cur_batch;
+    timeline.Pause();
+    read_time += timeline.ElapsedSec();
+    total_time += timeline.ElapsedSec();
+
+    int run_op_idx = 0;
+    dev_ctx_->Wait();
+    for (auto& op : ops_) {
+      bool need_skip = false;
+      for (auto t = 0u; t < skip_ops_.size(); ++t) {
+        if (op->Type().find(skip_ops_[t]) != std::string::npos) {
+          need_skip = true;
+          break;
+        }
+      }
+      if (!need_skip) {
+        timeline.Start();
+        VLOG(3) << "Going to run op " << op_name[run_op_idx];
+        op->Run(*thread_scope_, place_);
+        dev_ctx_->Wait();
+        VLOG(3) << "Op " << op_name[run_op_idx] << " Finished";
+        timeline.Pause();
+        op_total_time[run_op_idx++] += timeline.ElapsedSec();
+        total_time += timeline.ElapsedSec();
+      }
+    }
+    timeline.Start();
+    PrintFetchVars();
+    thread_scope_->DropKids();
+    dev_ctx_->Wait();
+    timeline.Pause();
+    total_time += timeline.ElapsedSec();
+    timeline.Start();
+  }
+  VLOG(1) << "GpuPs worker " << thread_id_ << " train cost " << total_time
+          << " seconds, ins_num: " << total_ins_num;
+  for (size_t i = 0; i < op_name.size(); ++i) {
+    VLOG(1) << "card:" << thread_id_ << ", op: " << op_name[i]
+            << ", mean time: " << op_total_time[i] / total_ins_num
+            << "s, totol time:" << op_total_time[i] << "sec";
+  }
+  return;
+}
+
 void PSGPUWorker::ResetStat() {
   total_time_ = 0;
   read_time_ = 0;
diff --git a/python/paddle/distributed/fleet/utils/fs.py b/python/paddle/distributed/fleet/utils/fs.py
index 221f09a796a6f388429fb75367c330abffb4c8b0..7e62e551fe8d53eb354505bdc86d7c12d9d06726 100644
--- a/python/paddle/distributed/fleet/utils/fs.py
+++ b/python/paddle/distributed/fleet/utils/fs.py
@@ -447,9 +447,6 @@ class HDFSClient(FS):
             configs,
             time_out=5 * 60 * 1000,  # ms
             sleep_inter=1000):  # ms
-        # Raise exception if JAVA_HOME not exists.
-        java_home = os.environ["JAVA_HOME"]
-
         self.pre_commands = []
         hadoop_bin = '%s/bin/hadoop' % hadoop_home
         self.pre_commands.append(hadoop_bin)