finish

paddle/fluid/framework/details/multi_devices_graph_builder.cc

@@ -57,8 +57,7 @@ MultiDevSSAGraphBuilder::MultiDevSSAGraphBuilder(
 
 void MultiDevSSAGraphBuilder::CreateOpHandleIOs(SSAGraph *result, OpDesc *op,
                                                 const platform::Place &p,
-                                                const size_t &i,
-                                                bool create_output) const {
+                                                const size_t &i) const {
   auto *op_handle = result->ops_.back().get();
   op_handle->dev_ctxes_[p] = const_cast<platform::DeviceContext *>(
       platform::DeviceContextPool::Instance().Get(p));
@@ -69,12 +68,11 @@ void MultiDevSSAGraphBuilder::CreateOpHandleIOs(SSAGraph *result, OpDesc *op,
     VarHandle *var = CreateOrGetLatestVarHandle(result, each_var_name, p, i);
     op_handle->AddInput(var);
   }
-  if (create_output) {
-    var_names = op->OutputArgumentNames();
 
-    for (auto &each_var_name : var_names) {
-      CreateOpOutput(result, op_handle, each_var_name, p, i);
-    }
+  var_names = op->OutputArgumentNames();
+
+  for (auto &each_var_name : var_names) {
+    CreateOpOutput(result, op_handle, each_var_name, p, i);
   }
 }
 
@@ -106,10 +104,10 @@ std::unique_ptr<SSAGraph> MultiDevSSAGraphBuilder::Build(
       auto &p = places_[0];
       auto *s = local_scopes_[0];
       // FIXME(wuyi): send op always copy from GPU 0
-      result.ops_.emplace_back(new SendOpHandle(*op, s));
+      result.ops_.emplace_back(new SendOpHandle(*op, s, p));
       // Create inputs for output on original place and no ssa output
       // is created for send op.
-      CreateOpHandleIOs(&result, op, p, 0, false);
+      CreateOpHandleIOs(&result, op, p, 0);
       continue;
     }
 

paddle/fluid/framework/details/multi_devices_graph_builder.h

@@ -46,7 +46,7 @@ class MultiDevSSAGraphBuilder : public SSAGraphBuilder {
 
  private:
   void CreateOpHandleIOs(SSAGraph *result, OpDesc *op, const platform::Place &p,
-                         const size_t &i, bool create_output = true) const;
+                         const size_t &i) const;
 
  private:
   std::string loss_var_name_;

paddle/fluid/framework/details/send_op_handle.cc

@@ -19,18 +19,22 @@ namespace framework {
 namespace details {
 
 SendOpHandle::SendOpHandle(const framework::OpDesc &op_desc,
-                           const Scope *local_scope)
+                           const Scope *local_scope,
+                           const platform::Place &place)
     : op_(framework::OpRegistry::CreateOp(op_desc)),
-      local_scope_(local_scope) {}
+      local_scope_(local_scope),
+      place_(place) {}
 
 void SendOpHandle::RunImpl() {
   // Wait input done
   for (auto *in : inputs_) {
     auto &p = static_cast<VarHandle *>(in)->place_;
+    if (in->DebugString() == "dummy") {  // HACK
+      continue;
+    }
     in->generated_op_->Wait(dev_ctxes_[p]);
   }
-  platform::CPUPlace cpu;
-  op_->Run(*local_scope_, cpu);
+  op_->Run(*local_scope_, place_);
 }
 
 std::string SendOpHandle::Name() const { return "send"; }

paddle/fluid/framework/details/send_op_handle.h

@@ -31,8 +31,10 @@ namespace details {
 struct SendOpHandle : public OpHandleBase {
   std::unique_ptr<OperatorBase> op_;
   const Scope* local_scope_;
+  const platform::Place& place_;
 
-  SendOpHandle(const framework::OpDesc& op_desc, const Scope* local_scope);
+  SendOpHandle(const framework::OpDesc& op_desc, const Scope* local_scope,
+               const platform::Place& place);
 
   std::string Name() const override;