clean code

paddle/fluid/operators/distributed/grpc/grpc_server.cc

@@ -106,12 +106,6 @@ class RequestSend final : public RequestBase {
     auto invar = request_->GetVar();
     int trainer_id = request_->GetTrainerId();
     framework::Variable* outvar = nullptr;
-
-    /*
-    if (!request_handler_->sync_mode()) {
-      request_->ReleaseOwnershipOfLocalScope();
-    }
-    */
     request_handler_->Handle(varname, scope, invar, &outvar, trainer_id);
     Finish(reply_, &responder_);
   }

paddle/fluid/operators/distributed/parameter_send.cc

@@ -80,7 +80,7 @@ void ParameterSend<T>::operator()(const RpcContext &rpc_ctx,
     auto &send_slr = send_var->Get<framework::SelectedRows>();
     auto abs_sections = ToAbsoluteSection(rpc_ctx.height_sections);
 
-    auto send_rows = send_slr.rows();
+    auto &send_rows = send_slr.rows();
     std::vector<std::vector<int>> outs_rows_idx;
     std::vector<std::vector<int>> outs_dense_idx;
 
@@ -88,7 +88,7 @@ void ParameterSend<T>::operator()(const RpcContext &rpc_ctx,
     outs_dense_idx.resize(out_num);
 
     auto row_numel = send_slr.value().numel() / send_slr.value().dims()[0];
-    auto src = send_slr.value().data<T>();
+    auto *src = send_slr.value().data<T>();
 
     // create output var in local scope
     std::vector<framework::SelectedRows *> outs;
@@ -110,8 +110,8 @@ void ParameterSend<T>::operator()(const RpcContext &rpc_ctx,
       outs[i]->set_height(rpc_ctx.height_sections[i]);
       auto dims = send_slr.GetCompleteDims();
       dims[0] = rows_idx.size();
-      outs[i]->mutable_value()->mutable_data<T>(dims, send_slr.place());
       outs[i]->mutable_rows()->clear();
+      outs[i]->mutable_value()->mutable_data<T>(dims, send_slr.place());
       if (rows_idx.size() > 0) {
         for (auto idx : rows_idx) {
           outs[i]->mutable_rows()->push_back(idx - abs_sections[i]);

paddle/fluid/operators/distributed/request_handler.h

@@ -71,15 +71,13 @@ class VarHandle {
   VarHandle(const std::string ep, const std::string& method,
             const std::string& name,
             const platform::DeviceContext* p_ctx = nullptr,
-            const framework::Scope* p_scope = nullptr,
-            bool delete_local_scope = false)
+            const framework::Scope* p_scope = nullptr)
       : status_(kDefaultState) {
     ep_ = ep;
     ctx_ = p_ctx;
     scope_ = p_scope;
     name_ = name;
     method_ = method;
-    delete_local_scope_ = delete_local_scope;
   }
 
   virtual ~VarHandle() {}
@@ -101,7 +99,6 @@ class VarHandle {
       std::unique_lock<std::mutex> lk(sync_mutex_);
       status_ = ok ? kFinishState : kErrorState;
     }
-    if (delete_local_scope_ && scope_) delete scope_;
     VLOG(7) << "VarHandle finish:" << ok;
     wait_cond_.notify_all();
   }
@@ -128,7 +125,6 @@ class VarHandle {
   std::string name_;
   // RPC method name.
   std::string method_;
-  bool delete_local_scope_;
 
  protected:
   std::mutex sync_mutex_;

paddle/fluid/operators/distributed/request_handler_impl.cc

@@ -59,15 +59,8 @@ bool RequestSendHandler::Handle(const std::string& varname,
             "async mode should not recv BATCH_BARRIER_MESSAGE or "
             "COMPLETE_MESSAGE");
       }
-
-      try {
       executor_->RunPreparedContext((*grad_to_prepared_ctx_)[varname].get(),
                                     scope);
-        delete scope;
-      } catch (std::exception& e) {
-        LOG(ERROR) << "async: run sub program error " << e.what();
-        return false;
-      }
       return true;
     } else {  // sync
       rpc_server_->WaitCond(kRequestSend);

paddle/fluid/operators/distributed/variable_response.h

@@ -60,13 +60,14 @@ class VariableResponse {
                    bool create_scope = false)
       : scope_(scope), dev_ctx_(dev_ctx), create_scope_(create_scope) {
     if (create_scope) {
-      local_scope_ = &scope->NewScope();
+      local_scope_ = scope->NewTmpScope();
     }
   }
 
   virtual ~VariableResponse() {
     if (local_scope_) {
-      scope_->DeleteScope(local_scope_);
+      delete local_scope_;
+      local_scope_ = nullptr;
     }
   }
 
@@ -86,12 +87,6 @@ class VariableResponse {
   inline std::string Varname() const { return meta_.varname(); }
   inline std::string OutVarname() const { return meta_.out_varname(); }
   inline std::string TableName() const { return meta_.table_name(); }
-  inline void ReleaseOwnershipOfLocalScope() {
-    PADDLE_ENFORCE(create_scope_,
-                   "only when create_scope_ is true can you release the "
-                   "ownership of local scope");
-    local_scope_ = nullptr;
-  }
 
   // should call parse first.
   framework::Variable* GetVar() {

paddle/fluid/operators/distributed_ops/send_recv_util.h

@@ -54,6 +54,7 @@ inline int FindOutIdx(int row, const std::vector<int64_t>& abs_sections) {
       return i - 1;
     }
   }
+  PADDLE_ENFORCE_LT(row, abs_sections.back(), "row should be less then max id");
   return abs_sections.size() - 1;
 }