diff --git a/oneflow/core/actor/copy_comm_net_actor.cpp b/oneflow/core/actor/copy_comm_net_actor.cpp
index 24693edf535bd7d6d35dbe4241c43500176d88ac..82abb8b5d974914c10e7800210a22e20cc71e64b 100644
--- a/oneflow/core/actor/copy_comm_net_actor.cpp
+++ b/oneflow/core/actor/copy_comm_net_actor.cpp
@@ -8,6 +8,8 @@ void CopyCommNetActor::Init(const TaskProto& task_proto,
                             const ThreadCtx& thread_ctx) {
   Actor::Init(task_proto, thread_ctx);
   CHECK(thread_ctx.cpu_stream);
+  set_num_of_not_eord(1);
+  mut_num_of_read_empty() = 1;
   mut_device_ctx().reset(new CpuDeviceCtx(thread_ctx.cpu_stream));
   OF_SET_MSG_HANDLE(&CopyCommNetActor::HandleNormal);
 }
@@ -15,16 +17,19 @@ void CopyCommNetActor::Init(const TaskProto& task_proto,
 int CopyCommNetActor::HandleNormal(const ActorMsg& msg) {
   if (msg.msg_type() == ActorMsgType::kCmdMsg) {
     CHECK_EQ(msg.actor_cmd(), ActorCmd::kEORD);
-    OF_SET_MSG_HANDLE(&CopyCommNetActor::HandleWaitUntilNoReadableRegst);
+    ProcessEord();
   } else if (msg.msg_type() == ActorMsgType::kRegstMsg) {
     auto regst_wp = msg.regst_wrapper();
     if (TryUpdtStateAsProducedRegst(regst_wp->regst_raw_ptr()) != 0) {
+      mut_num_of_read_empty() = 0;
       CHECK(piece_id2waiting_in_regst_.emplace(regst_wp->piece_id(), regst_wp)
                 .second);
+    } else {
+      // do nothing
     }
+    ActUntilFail();
   }
-  ActUntilFail();
-  return 0;
+  return msg_handle() == nullptr;
 }
 
 int CopyCommNetActor::HandleWaitUntilNoReadableRegst(const ActorMsg& msg) {
@@ -33,13 +38,7 @@ int CopyCommNetActor::HandleWaitUntilNoReadableRegst(const ActorMsg& msg) {
   ActUntilFail();
   if (piece_id2waiting_in_regst_.empty()) {
     AsyncSendEORDMsgForAllProducedRegstDesc();
-    if (total_reading_cnt() == 0) {
-      OF_SET_MSG_HANDLE(nullptr);
-      return 1;
-    } else {
-      OF_SET_MSG_HANDLE(&CopyCommNetActor::HandleWaitUntilReadingCntEqualZero);
-      return 0;
-    }
+    OF_SET_MSG_HANDLE(&CopyCommNetActor::HandleWaitUntilReadingCntEqualZero);
   }
   return 0;
 }
@@ -64,6 +63,7 @@ void CopyCommNetActor::Act() {
   });
   AsyncSendRegstMsgToProducer(regst_wp);
   piece_id2waiting_in_regst_.erase(next_regst_it);
+  mut_num_of_read_empty() = piece_id2waiting_in_regst_.empty();
 }
 
 REGISTER_ACTOR(kCopyCommNetTask, true, CopyCommNetActor);
diff --git a/oneflow/core/actor/copy_hd_actor.cpp b/oneflow/core/actor/copy_hd_actor.cpp
index c7957a8a90715e81b6085d9ede5d2c1005316852..e42f265feaa56a2a7f4f536686653c1d01f995f6 100644
--- a/oneflow/core/actor/copy_hd_actor.cpp
+++ b/oneflow/core/actor/copy_hd_actor.cpp
@@ -10,36 +10,35 @@ void CopyHdActor::Init(const TaskProto& task_proto,
   CHECK(thread_ctx.copy_hd_cuda_stream);
   mut_device_ctx().reset(
       new CudaDeviceCtx(thread_ctx.copy_hd_cuda_stream, nullptr, nullptr));
+  set_num_of_not_eord(1);
+  mut_num_of_read_empty() = 1;
   OF_SET_MSG_HANDLE(&CopyHdActor::HandleNormal);
 }
 
 int CopyHdActor::HandleNormal(const ActorMsg& msg) {
   if (msg.msg_type() == ActorMsgType::kCmdMsg) {
     CHECK_EQ(msg.actor_cmd(), ActorCmd::kEORD);
-    OF_SET_MSG_HANDLE(&CopyHdActor::HandleWaitUntilNoReadableRegst);
+    ProcessEord();
   } else if (msg.msg_type() == ActorMsgType::kRegstMsg) {
     if (TryUpdtStateAsProducedRegst(msg.regst_wrapper()->regst_raw_ptr())
         != 0) {
+      mut_num_of_read_empty() = 0;
       waiting_in_regst_.push(msg.regst_wrapper());
+    } else {
+      // do nothing
     }
+    ActUntilFail();
   }
-  ActUntilFail();
-  return 0;
+  return msg_handle() == nullptr;
 }
 
 int CopyHdActor::HandleWaitUntilNoReadableRegst(const ActorMsg& msg) {
   CHECK_EQ(TryUpdtStateAsProducedRegst(msg.regst_wrapper()->regst_raw_ptr()),
            0);
   ActUntilFail();
-  if (waiting_in_regst_.empty()) {
+  if (mut_num_of_read_empty()) {
     AsyncSendEORDMsgForAllProducedRegstDesc();
-    if (total_reading_cnt() == 0) {
-      OF_SET_MSG_HANDLE(nullptr);
-      return 1;
-    } else {
-      OF_SET_MSG_HANDLE(&CopyHdActor::HandleWaitUntilReadingCntEqualZero);
-      return 0;
-    }
+    OF_SET_MSG_HANDLE(&CopyHdActor::HandleWaitUntilReadingCntEqualZero);
   }
   return 0;
 }
@@ -64,6 +63,7 @@ void CopyHdActor::Act() {
   });
   AsyncSendRegstMsgToProducer(regst_wp);
   waiting_in_regst_.pop();
+  mut_num_of_read_empty() = waiting_in_regst_.empty();
 }
 
 REGISTER_ACTOR(kCopyHdTask, true, CopyHdActor);
diff --git a/oneflow/core/actor/model_diff_accumulate_actor.cpp b/oneflow/core/actor/model_diff_accumulate_actor.cpp
index 6f969f546723ae2c6e6aba7e66343841ff7bf887..f00b377721405f4d019e764d54396d9339caab8a 100644
--- a/oneflow/core/actor/model_diff_accumulate_actor.cpp
+++ b/oneflow/core/actor/model_diff_accumulate_actor.cpp
@@ -14,6 +14,8 @@ void MdDiffAccActor::Init(const TaskProto& task_proto,
                                              cuda_handle_.cublas_handle(),
                                              cuda_handle_.cudnn_handle()));
   }
+  set_num_of_not_eord(1);
+  mut_num_of_read_empty() = 1;
   OF_SET_MSG_HANDLE(&MdDiffAccActor::HandleNormal);
   ForEachCurWriteableRegst(
       [this](Regst* regst) { model_diff_acc_cnt_[regst] = 0; });
@@ -22,15 +24,18 @@ void MdDiffAccActor::Init(const TaskProto& task_proto,
 int MdDiffAccActor::HandleNormal(const ActorMsg& msg) {
   if (msg.msg_type() == ActorMsgType::kCmdMsg) {
     CHECK_EQ(msg.actor_cmd(), ActorCmd::kEORD);
-    OF_SET_MSG_HANDLE(&MdDiffAccActor::HandleWaitUntilNoReadableRegst);
+    ProcessEord();
   } else if (msg.msg_type() == ActorMsgType::kRegstMsg) {
     if (TryUpdtStateAsProducedRegst(msg.regst_wrapper()->regst_raw_ptr())
         != 0) {
+      mut_num_of_read_empty() = 0;
       waiting_in_regst_.push(msg.regst_wrapper());
+    } else {
+      // do nothing
     }
+    ActUntilFail();
   }
-  ActUntilFail();
-  return 0;
+  return msg_handle() == nullptr;
 }
 
 int MdDiffAccActor::HandleWaitUntilNoReadableRegst(const ActorMsg& msg) {
@@ -39,13 +44,7 @@ int MdDiffAccActor::HandleWaitUntilNoReadableRegst(const ActorMsg& msg) {
   ActUntilFail();
   if (waiting_in_regst_.empty()) {
     AsyncSendEORDMsgForAllProducedRegstDesc();
-    if (total_reading_cnt() == 0) {
-      OF_SET_MSG_HANDLE(nullptr);
-      return 1;
-    } else {
-      OF_SET_MSG_HANDLE(&MdDiffAccActor::HandleWaitUntilReadingCntEqualZero);
-      return 0;
-    }
+    OF_SET_MSG_HANDLE(&MdDiffAccActor::HandleWaitUntilReadingCntEqualZero);
   }
   return 0;
 }
@@ -81,6 +80,7 @@ void MdDiffAccActor::Act() {
   });
   AsyncSendRegstMsgToProducer(regst_wp);
   waiting_in_regst_.pop();
+  mut_num_of_read_empty() = waiting_in_regst_.empty();
 }
 
 }  // namespace oneflow