update nce and hierarchical_sigmoid remote_prefetch

test=develop

paddle/fluid/framework/details/async_ssa_graph_executor.cc

@@ -81,8 +81,9 @@ void ProcessGraph(std::vector<ir::Graph *> graphs, Scope *scope) {
           nodes_to_delete.push_back(node);
           VLOG(3) << "find and remove an recv op: "
                   << recv_varname_to_ctx[recv_var_name];
-        } else if (node->Name() == "lookup_table") {
-          VLOG(0) << "set lookup_table op remote_prefetch to false";
+        } else if (node->Name() == "lookup_table" || node->Name() == "nce" ||
+                   node->Name() == "hierarchical_sigmoid") {
+          VLOG(0) << "set " << node->Name() << " op remote_prefetch to false";
           node->Op()->SetAttr("remote_prefetch", false);
         }
       }

paddle/fluid/operators/hierarchical_sigmoid_op.h

@@ -68,8 +68,9 @@ class HierarchicalSigmoidOpKernel : public framework::OpKernel<T> {
     size_t num_classes = static_cast<size_t>(ctx.Attr<int>("num_classes"));
     // for remote prefetch
 
+    auto remote_prefetch = ctx.Attr<bool>("remote_prefetch");
     auto epmap = ctx.Attr<std::vector<std::string>>("epmap");
-    if (!epmap.empty()) {
+    if (remote_prefetch && !epmap.empty()) {
       // if epmap is not empty, then the parameter will be fetched from remote
       // parameter
       // server

paddle/fluid/operators/nce_op.h

@@ -156,9 +156,10 @@ class NCEKernel : public framework::OpKernel<T> {
     auto input_mat = EigenMatrix<T>::From(*(context.Input<Tensor>("Input")));
 
     // for remote prefetch
+    auto remote_prefetch = context.Attr<bool>("remote_prefetch");
     auto epmap = context.Attr<std::vector<std::string>>("epmap");
 
-    if (!epmap.empty()) {
+    if (remote_prefetch && !epmap.empty()) {
       // if epmap is not empty, then the parameter will be fetched from remote
       // parameter
       // server