diff --git a/oneflow/core/control/ctrl_client.cpp b/oneflow/core/control/ctrl_client.cpp
index b182c2258d9e9b75f4de9ed298f841807a4f8e75..95088682f9231fe6bd58ba2598cf66948117a55d 100644
--- a/oneflow/core/control/ctrl_client.cpp
+++ b/oneflow/core/control/ctrl_client.cpp
@@ -100,6 +100,13 @@ void CtrlClient::PushKV(const std::string& k, std::function<void(std::string*)>
   call(GetResponsibleStub(k));
 }
 
+void CtrlClient::PushMasterKV(const std::string& k, std::function<void(std::string*)> VSetter) {
+  ClientCall<CtrlMethod::kPushKV> call;
+  call.mut_request()->set_key(k);
+  VSetter(call.mut_request()->mutable_val());
+  call(GetMasterStub());
+}
+
 void CtrlClient::PushKV(const std::string& k, const std::string& v) {
   PushKV(k, [&](std::string* o) { *o = v; });
 }
@@ -108,12 +115,22 @@ void CtrlClient::PushKV(const std::string& k, const PbMessage& msg) {
   PushKV(k, [&](std::string* o) { msg.SerializeToString(o); });
 }
 
+void CtrlClient::PushMasterKV(const std::string& k, const PbMessage& msg) {
+  PushMasterKV(k, [&](std::string* o) { msg.SerializeToString(o); });
+}
+
 void CtrlClient::ClearKV(const std::string& k) {
   ClientCall<CtrlMethod::kClearKV> call;
   call.mut_request()->set_key(k);
   call(GetResponsibleStub(k));
 }
 
+void CtrlClient::ClearMasterKV(const std::string& k) {
+  ClientCall<CtrlMethod::kClearKV> call;
+  call.mut_request()->set_key(k);
+  call(GetMasterStub());
+}
+
 void CtrlClient::PullKV(const std::string& k, std::function<void(const std::string&)> VGetter) {
   ClientCall<CtrlMethod::kPullKV> call;
   call.mut_request()->set_key(k);
@@ -121,6 +138,14 @@ void CtrlClient::PullKV(const std::string& k, std::function<void(const std::stri
   VGetter(call.response().val());
 }
 
+void CtrlClient::PullMasterKV(const std::string& k,
+                              std::function<void(const std::string&)> VGetter) {
+  ClientCall<CtrlMethod::kPullKV> call;
+  call.mut_request()->set_key(k);
+  call(GetMasterStub());
+  VGetter(call.response().val());
+}
+
 void CtrlClient::PullKV(const std::string& k, std::string* v) {
   PullKV(k, [&](const std::string& i) { *v = i; });
 }
@@ -129,6 +154,10 @@ void CtrlClient::PullKV(const std::string& k, PbMessage* msg) {
   PullKV(k, [&](const std::string& i) { msg->ParseFromString(i); });
 }
 
+void CtrlClient::PullMasterKV(const std::string& k, PbMessage* msg) {
+  PullMasterKV(k, [&](const std::string& i) { msg->ParseFromString(i); });
+}
+
 void CtrlClient::PushActEvent(const ActEvent& act_event) {
   ClientCall<CtrlMethod::kPushActEvent> call;
   *(call.mut_request()->mutable_act_event()) = act_event;
diff --git a/oneflow/core/control/ctrl_client.h b/oneflow/core/control/ctrl_client.h
index 3513f7d3923f829242a65cd046c2048804c1dc7a..4840fff56a77d84ceeae02b4e01251ca611d719d 100644
--- a/oneflow/core/control/ctrl_client.h
+++ b/oneflow/core/control/ctrl_client.h
@@ -38,15 +38,19 @@ class CtrlClient final {
   void PushKV(const std::string& k, std::function<void(std::string*)> VSetter);
   void PushKV(const std::string& k, const std::string& v);
   void PushKV(const std::string& k, const PbMessage& msg);
+  void PushMasterKV(const std::string& k, const PbMessage& msg);
   template<typename T>
   typename std::enable_if<std::is_arithmetic<T>::value>::type PushKVT(const std::string& k, T v) {
     PushKV(k, std::to_string(v));
   }
 
   void ClearKV(const std::string& k);
+  void ClearMasterKV(const std::string& k);
+
   void PullKV(const std::string& k, std::function<void(const std::string&)> VGetter);
   void PullKV(const std::string& k, std::string* v);
   void PullKV(const std::string& k, PbMessage* msg);
+  void PullMasterKV(const std::string& k, PbMessage* msg);
   template<typename T>
   typename std::enable_if<std::is_arithmetic<T>::value>::type PullKVT(const std::string& k, T* v) {
     std::string v_str;
@@ -65,6 +69,8 @@ class CtrlClient final {
   friend class Global<CtrlClient>;
   CtrlClient();
   void LoadServer(const std::string& server_addr, CtrlService::Stub* stub);
+  void PushMasterKV(const std::string& k, std::function<void(std::string*)> VSetter);
+  void PullMasterKV(const std::string& k, std::function<void(const std::string&)> VGetter);
   CtrlService::Stub* GetMasterStub() { return stubs_[0].get(); }
   CtrlService::Stub* GetThisStub();
   CtrlService::Stub* GetResponsibleStub(const std::string& key);
diff --git a/oneflow/core/control/ctrl_server.cpp b/oneflow/core/control/ctrl_server.cpp
index 7ff644619b827e093fe9fdc0c98f574c22f81875..ffc1cd2f3efb09b0e5bef1fb7584e447ae3fbbae 100644
--- a/oneflow/core/control/ctrl_server.cpp
+++ b/oneflow/core/control/ctrl_server.cpp
@@ -194,7 +194,8 @@ void CtrlServer::Init() {
   Add([this](CtrlCall<CtrlMethod::kClear>* call) {
     name2lock_status_.clear();
     kv_.clear();
-    CHECK(pending_kv_calls_.empty());
+    CHECK(pending_kv_calls_.empty()) << "size(): " << pending_kv_calls_.size()
+                                     << ", begin()->key: " << pending_kv_calls_.begin()->first;
     call->SendResponse();
     EnqueueRequest<CtrlMethod::kClear>();
   });
diff --git a/oneflow/core/eager/eager_instruction.proto b/oneflow/core/eager/eager_instruction.proto
new file mode 100644
index 0000000000000000000000000000000000000000..f5eb7260fca05ee0a08f4f91dd8e9e47bbd1e3c4
--- /dev/null
+++ b/oneflow/core/eager/eager_instruction.proto
@@ -0,0 +1,10 @@
+syntax = "proto2";
+package oneflow.eager;
+
+import "oneflow/core/vm/instruction.proto";
+import "oneflow/core/eager/eager_symbol.proto";
+
+message EagerInstruction {
+  optional vm.InstructionListProto instruction_list = 1;
+  optional EagerSymbolList eager_symbol_list = 2;
+};
diff --git a/oneflow/core/eager/eager_util.cpp b/oneflow/core/eager/eager_oneflow.cpp
similarity index 52%
rename from oneflow/core/eager/eager_util.cpp
rename to oneflow/core/eager/eager_oneflow.cpp
index c4f80fbc18bfe931df181d1f0f41540e234c9c50..c8eef9d4f19f66b9da5df5607ae16439461b0f45 100644
--- a/oneflow/core/eager/eager_util.cpp
+++ b/oneflow/core/eager/eager_oneflow.cpp
@@ -13,13 +13,15 @@ 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.
 */
-#include "oneflow/core/eager/eager_util.h"
+#include "oneflow/core/eager/eager_oneflow.h"
 #include "oneflow/core/eager/eager_symbol.pb.h"
 #include "oneflow/core/vm/vm_util.h"
 #include "oneflow/core/vm/instruction.pb.h"
 #include "oneflow/core/eager/eager_symbol_storage.h"
 #include "oneflow/core/job/job_desc.h"
 #include "oneflow/core/job/scope.h"
+#include "oneflow/core/job/machine_context.h"
+#include "oneflow/core/job/cluster_instruction.h"
 #include "oneflow/core/job/placement.pb.h"
 #include "oneflow/core/operator/op_conf.pb.h"
 #include "oneflow/core/operator/op_attribute.pb.h"
@@ -52,41 +54,57 @@ void StorageAdd(const EagerSymbol& symbol) {
   }
 }
 
-Maybe<void> RunLogicalInstruction(const vm::InstructionListProto& instruction_list_proto,
-                                  const EagerSymbolList& eager_symbol_list) {
-  for (const auto& eager_symbol : eager_symbol_list.eager_symbol()) { StorageAdd(eager_symbol); }
-  return vm::Run(instruction_list_proto);
-}
+}  // namespace
 
-Maybe<void> RunPhysicalInstruction(const vm::InstructionListProto& instruction_list_proto,
-                                   const EagerSymbolList& eager_symbol_list) {
+Maybe<void> EagerOneflow::RunPhysicalInstruction(
+    const std::shared_ptr<const ClusterInstructionProto>& cluster_instruction) {
+  const vm::InstructionListProto& instruction_list_proto =
+      cluster_instruction->eager_instruction().instruction_list();
+  const EagerSymbolList& eager_symbol_list =
+      cluster_instruction->eager_instruction().eager_symbol_list();
   for (const auto& eager_symbol : eager_symbol_list.eager_symbol()) { StorageAdd(eager_symbol); }
   return vm::Run(instruction_list_proto);
 }
 
-}  // namespace
-
-Maybe<void> RunPhysicalInstruction(const std::string& instruction_list_proto_str,
-                                   const std::string& eager_symbol_list_str) {
-  vm::InstructionListProto instruction_list_proto;
-  CHECK_OR_RETURN(TxtString2PbMessage(instruction_list_proto_str, &instruction_list_proto))
+Maybe<void> EagerOneflow::RunPhysicalInstruction(const std::string& instruction_list_proto_str,
+                                                 const std::string& eager_symbol_list_str) {
+  auto cluster_instruction = std::make_shared<ClusterInstructionProto>();
+  vm::InstructionListProto* instruction_list_proto =
+      cluster_instruction->mutable_eager_instruction()->mutable_instruction_list();
+  CHECK_OR_RETURN(TxtString2PbMessage(instruction_list_proto_str, instruction_list_proto))
       << "InstructionListProto parse failed";
-  EagerSymbolList eager_symbol_list;
-  CHECK_OR_RETURN(TxtString2PbMessage(eager_symbol_list_str, &eager_symbol_list))
+  EagerSymbolList* eager_symbol_list =
+      cluster_instruction->mutable_eager_instruction()->mutable_eager_symbol_list();
+  CHECK_OR_RETURN(TxtString2PbMessage(eager_symbol_list_str, eager_symbol_list))
       << "EagerSymbolList parse failed";
-  return RunPhysicalInstruction(instruction_list_proto, eager_symbol_list);
+  return RunPhysicalInstruction(
+      std::const_pointer_cast<const ClusterInstructionProto>(cluster_instruction));
+}
+
+Maybe<void> EagerOneflow::RunLogicalInstruction(
+    const std::shared_ptr<const ClusterInstructionProto>& cluster_instruction) {
+  CHECK(cluster_instruction->has_eager_instruction());
+  CHECK(Global<MachineCtx>::Get()->IsThisMachineMaster());
+  ClusterInstruction::MasterSendEagerInstruction(*cluster_instruction);
+  return RunPhysicalInstruction(cluster_instruction);
 }
 
-Maybe<void> RunLogicalInstruction(const std::string& instruction_list_proto_str,
-                                  const std::string& eager_symbol_list_str) {
-  vm::InstructionListProto instruction_list_proto;
-  CHECK_OR_RETURN(TxtString2PbMessage(instruction_list_proto_str, &instruction_list_proto))
+Maybe<void> EagerOneflow::RunLogicalInstruction(const std::string& instruction_list_proto_str,
+                                                const std::string& eager_symbol_list_str) {
+  auto cluster_instruction = std::make_shared<ClusterInstructionProto>();
+  vm::InstructionListProto* instruction_list_proto =
+      cluster_instruction->mutable_eager_instruction()->mutable_instruction_list();
+  CHECK_OR_RETURN(TxtString2PbMessage(instruction_list_proto_str, instruction_list_proto))
       << "InstructionListProto parse failed";
-  EagerSymbolList eager_symbol_list;
-  CHECK_OR_RETURN(TxtString2PbMessage(eager_symbol_list_str, &eager_symbol_list))
+  EagerSymbolList* eager_symbol_list =
+      cluster_instruction->mutable_eager_instruction()->mutable_eager_symbol_list();
+  CHECK_OR_RETURN(TxtString2PbMessage(eager_symbol_list_str, eager_symbol_list))
       << "EagerSymbolList parse failed";
-  return RunLogicalInstruction(instruction_list_proto, eager_symbol_list);
+  return RunLogicalInstruction(
+      std::const_pointer_cast<const ClusterInstructionProto>(cluster_instruction));
 }
 
+COMMAND(Global<EagerOneflow>::SetAllocated(new EagerOneflow()));
+
 }  // namespace eager
 }  // namespace oneflow
diff --git a/oneflow/core/eager/eager_oneflow.h b/oneflow/core/eager/eager_oneflow.h
new file mode 100644
index 0000000000000000000000000000000000000000..1ec038912fc1dcc2187d00a825a2b4ba3c307fa9
--- /dev/null
+++ b/oneflow/core/eager/eager_oneflow.h
@@ -0,0 +1,42 @@
+/*
+Copyright 2020 The OneFlow Authors. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+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.
+*/
+#ifndef ONEFLOW_CORE_EAGER_EAGER_ONEFLOW_H_
+#define ONEFLOW_CORE_EAGER_EAGER_ONEFLOW_H_
+
+#include "oneflow/core/common/maybe.h"
+#include "oneflow/core/job/cluster_instruction.pb.h"
+
+namespace oneflow {
+namespace eager {
+
+class EagerOneflow final {
+ public:
+  Maybe<void> RunLogicalInstruction(
+      const std::shared_ptr<const ClusterInstructionProto>& cluster_instruction);
+
+  Maybe<void> RunLogicalInstruction(const std::string& instruction_list_proto_str,
+                                    const std::string& eager_symbol_list_str);
+
+  Maybe<void> RunPhysicalInstruction(const std::string& instruction_list_proto_str,
+                                     const std::string& eager_symbol_list_str);
+  Maybe<void> RunPhysicalInstruction(
+      const std::shared_ptr<const ClusterInstructionProto>& cluster_instruction);
+};
+
+}  // namespace eager
+}  // namespace oneflow
+
+#endif  // ONEFLOW_CORE_EAGER_EAGER_ONEFLOW_H_
diff --git a/oneflow/core/eager/eager_util.h b/oneflow/core/eager/eager_util.h
deleted file mode 100644
index 5478411b80fa61a070fd496f547d6660f426dfd7..0000000000000000000000000000000000000000
--- a/oneflow/core/eager/eager_util.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
-Copyright 2020 The OneFlow Authors. All rights reserved.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-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.
-*/
-#ifndef ONEFLOW_CORE_EAGER_EAGER_UTIL_H_
-#define ONEFLOW_CORE_EAGER_EAGER_UTIL_H_
-
-#include "oneflow/core/common/maybe.h"
-
-namespace oneflow {
-namespace eager {
-
-Maybe<void> RunPhysicalInstruction(const std::string& instruction_list_proto_str,
-                                   const std::string& eager_symbol_list_str);
-Maybe<void> RunLogicalInstruction(const std::string& instruction_list_proto_str,
-                                  const std::string& eager_symbol_list_str);
-
-}  // namespace eager
-}  // namespace oneflow
-
-#endif  // ONEFLOW_CORE_EAGER_EAGER_UTIL_H_
diff --git a/oneflow/core/job/cluster.cpp b/oneflow/core/job/cluster.cpp
index e611d00fa3ad8b9724c37ae38a88c72f27b4f991..b3aa866ef0118dc6d0d9a6c29d00192c945a50a5 100644
--- a/oneflow/core/job/cluster.cpp
+++ b/oneflow/core/job/cluster.cpp
@@ -16,33 +16,68 @@ limitations under the License.
 #include "oneflow/core/job/cluster.h"
 #include "oneflow/core/job/cluster_instruction.pb.h"
 #include "oneflow/core/job/cluster_instruction.h"
+#include "oneflow/core/eager/eager_oneflow.h"
 #include "oneflow/core/control/ctrl_client.h"
 #include "oneflow/core/job/oneflow.h"
 #include "oneflow/core/job/machine_context.h"
 #include "oneflow/core/job/session_global_objects_scope.h"
 #include "oneflow/core/job/env_global_objects_scope.h"
 #include "oneflow/core/job/job_set.pb.h"
+#include "oneflow/core/thread/thread_pool.h"
 
 namespace oneflow {
 
-Maybe<void> Cluster::WorkerLoop() {
-  CHECK_OR_RETURN(!Global<MachineCtx>::Get()->IsThisMachineMaster());
-  ClusterInstructionProto cluster_instruction;
-  while (ClusterInstruction::WorkerReceiveHalt(&cluster_instruction) == false) {
+namespace {
+
+void AsyncRunLazyJobSet(ThreadPool* lazy_runtime_thread) {
+  lazy_runtime_thread->AddWork([] {
     ConfigProto config_proto;
     Global<CtrlClient>::Get()->PullKV("config_proto", &config_proto);
     int32_t machine_num = config_proto.resource().machine_num();
-    if (Global<MachineCtx>::Get()->this_machine_id() >= machine_num) { continue; }
+    // do nothing if it's not my business
+    if (Global<MachineCtx>::Get()->this_machine_id() >= machine_num) { return; }
     Global<SessionGlobalObjectsScope>::New();
-    JUST(Global<SessionGlobalObjectsScope>::Get()->Init(config_proto));
-
+    CHECK_JUST(Global<SessionGlobalObjectsScope>::Get()->Init(config_proto));
     JobSet job_set;
     Global<CtrlClient>::Get()->PullKV("session_job_set", &job_set);
     {
       Oneflow oneflow;
-      JUST(oneflow.Init(job_set));
+      CHECK_JUST(oneflow.Init(job_set));
     }
     Global<SessionGlobalObjectsScope>::Delete();
+  });
+}
+
+}  // namespace
+
+Maybe<void> Cluster::WorkerLoop() {
+  // The reason why excluding master machine is that
+  // eager instruction for compile-time symbol constructing must be done synchronously
+  CHECK_OR_RETURN(!Global<MachineCtx>::Get()->IsThisMachineMaster());
+  {
+    // Oneflow::~Oneflow blocking in current thread is not acceptable
+    // Two reasons why `lazy_runtime_thread` is needed:
+    //   1. making current thread non-block by
+    //      taking over the execution of Oneflow::~Oneflow
+    //   2. as a Synchronizing guard for all unfinished Oneflow::~Oneflow
+    //
+    // thread_num must be 1.
+    ThreadPool lazy_runtime_thread(1);
+    while (true) {
+      auto mut_cluster_instruction = std::make_shared<ClusterInstructionProto>();
+      ClusterInstruction::WorkerReceiveInstruction(mut_cluster_instruction.get());
+      if (mut_cluster_instruction->has_cluster_ctrl_halt()) {
+        break;
+      } else if (mut_cluster_instruction->has_cluster_ctrl_session_start()) {
+        ClusterInstruction::NewSessionBarrier();
+        AsyncRunLazyJobSet(&lazy_runtime_thread);
+      } else if (mut_cluster_instruction->has_eager_instruction()) {
+        Global<eager::EagerOneflow>::Get()->RunPhysicalInstruction(
+            std::const_pointer_cast<const ClusterInstructionProto>(mut_cluster_instruction));
+      } else {
+        OF_UNIMPLEMENTED();
+      }
+    }
   }
   ClusterInstruction::HaltBarrier();
   Global<EnvGlobalObjectsScope>::Delete();
diff --git a/oneflow/core/job/cluster_instruction.cpp b/oneflow/core/job/cluster_instruction.cpp
index 60f75b8f04435bcd700650bd9e76c0061fc8e514..dd037c07ffb17d250186551632098ed2c1ec4337 100644
--- a/oneflow/core/job/cluster_instruction.cpp
+++ b/oneflow/core/job/cluster_instruction.cpp
@@ -13,6 +13,7 @@ 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.
 */
+#include <mutex>
 #include "oneflow/core/job/cluster_instruction.h"
 #include "oneflow/core/job/cluster_instruction.pb.h"
 #include "oneflow/core/control/ctrl_server.h"
@@ -24,46 +25,103 @@ namespace oneflow {
 
 namespace {
 
-void BarrierClear() {
-  OF_BARRIER_ALL();
-  Global<CtrlClient>::Get()->Clear();
-  OF_BARRIER_ALL();
-}
-
 std::string GetHaltAckCtrlKey(int64_t machine_id) {
   return "HaltAckCtrlKey/" + std::to_string(machine_id);
 }
 
 // return unique sequential key
 // because ctrl key is not allowed to push/pull twice
-std::string GetHaltOrSessionStartCtrlKey() {
+std::string GetClusterInstructionKey() {
   static int64_t seq = 0;
-  return "HaltOrSessionStart/" + std::to_string(seq++);
+  return "ClusterInstructionKey/" + std::to_string(seq++);
+}
+
+class ObsoleteCtrlKeys {
+ public:
+  ObsoleteCtrlKeys() = default;
+  ~ObsoleteCtrlKeys() = default;
+
+  template<typename CallbackT>
+  void ForEach(const CallbackT& Callback) const {
+    std::unique_lock<std::mutex> lck(mutex_);
+    for (const std::string& k : keys_) { Callback(k); }
+  }
+
+  void Clear() {
+    std::unique_lock<std::mutex> lck(mutex_);
+    keys_.clear();
+  }
+  void Add(const std::string& key) {
+    std::unique_lock<std::mutex> lck(mutex_);
+    keys_.push_back(key);
+  }
+
+ private:
+  mutable std::mutex mutex_;
+  std::vector<std::string> keys_;
+};
+
+COMMAND(Global<ObsoleteCtrlKeys>::SetAllocated(new ObsoleteCtrlKeys()));
+
+void OccasionallyClearCtrlKV(const std::string& key) {
+  static std::atomic<int64_t> seq(0LL);
+  const static int64_t interval = 65536;
+  Global<ObsoleteCtrlKeys>::Get()->Add(key);
+  // 1 instead of 0 is better for avoid clearing no ctrl kv
+  if ((seq++) % interval == 1) {
+    OF_BARRIER_ALL();
+    if (Global<MachineCtx>::Get()->IsThisMachineMaster()) {
+      Global<ObsoleteCtrlKeys>::Get()->ForEach(
+          [](const std::string& k) { Global<CtrlClient>::Get()->ClearMasterKV(k); });
+    }
+    Global<ObsoleteCtrlKeys>::Get()->Clear();
+    OF_BARRIER_ALL();
+  }
+}
+
+void PushClusterInstruction(const ClusterInstructionProto& cluster_instruction) {
+  const std::string& key = GetClusterInstructionKey();
+  Global<CtrlClient>::Get()->PushMasterKV(key, cluster_instruction);
+  OccasionallyClearCtrlKV(key);
+}
+
+void PullClusterInstruction(ClusterInstructionProto* cluster_instruction) {
+  const std::string& key = GetClusterInstructionKey();
+  Global<CtrlClient>::Get()->PullMasterKV(key, cluster_instruction);
+  OccasionallyClearCtrlKV(key);
 }
 
 }  // namespace
 
+void ClusterInstruction::NewSessionBarrier() {
+  OF_BARRIER_ALL();
+  Global<CtrlClient>::Get()->Clear();
+  Global<ObsoleteCtrlKeys>::Get()->Clear();
+  OF_BARRIER_ALL();
+}
+
 void ClusterInstruction::MasterSendSessionStart() {
-  BarrierClear();
   ClusterInstructionProto cluster_instruction;
   cluster_instruction.mutable_cluster_ctrl_session_start();
-  Global<CtrlClient>::Get()->PushKV(GetHaltOrSessionStartCtrlKey(), cluster_instruction);
+  PushClusterInstruction(cluster_instruction);
+  NewSessionBarrier();
 }
 
 void ClusterInstruction::MasterSendHalt() {
-  BarrierClear();
   ClusterInstructionProto cluster_instruction;
   cluster_instruction.mutable_cluster_ctrl_halt();
-  Global<CtrlClient>::Get()->PushKV(GetHaltOrSessionStartCtrlKey(), cluster_instruction);
+  PushClusterInstruction(cluster_instruction);
   HaltBarrier();
 }
 
-bool ClusterInstruction::WorkerReceiveHalt(ClusterInstructionProto* cluster_instruction) {
-  BarrierClear();
-  Global<CtrlClient>::Get()->PullKV(GetHaltOrSessionStartCtrlKey(), cluster_instruction);
-  if (cluster_instruction->has_cluster_ctrl_halt()) { return true; }
-  CHECK(cluster_instruction->has_cluster_ctrl_session_start());
-  return false;
+void ClusterInstruction::MasterSendEagerInstruction(
+    const ClusterInstructionProto& cluster_instruction) {
+  CHECK(cluster_instruction.has_eager_instruction());
+  PushClusterInstruction(cluster_instruction);
+}
+
+void ClusterInstruction::WorkerReceiveInstruction(ClusterInstructionProto* cluster_instruction) {
+  PullClusterInstruction(cluster_instruction);
 }
 
 void ClusterInstruction::HaltBarrier() { OF_BARRIER_ALL(); }
diff --git a/oneflow/core/job/cluster_instruction.h b/oneflow/core/job/cluster_instruction.h
index c14d99852f5c355d1261a565d326fb4cce0b7272..cadc399819466aaa9a712252d6328cfa97dcdf9d 100644
--- a/oneflow/core/job/cluster_instruction.h
+++ b/oneflow/core/job/cluster_instruction.h
@@ -22,8 +22,10 @@ namespace oneflow {
 
 struct ClusterInstruction final {
   static void MasterSendSessionStart();
-  static bool WorkerReceiveHalt(ClusterInstructionProto* cluster_instruction);
   static void MasterSendHalt();
+  static void MasterSendEagerInstruction(const ClusterInstructionProto& cluster_instruction);
+  static void WorkerReceiveInstruction(ClusterInstructionProto* cluster_instruction);
+  static void NewSessionBarrier();
   static void HaltBarrier();
 };
 
diff --git a/oneflow/core/job/cluster_instruction.proto b/oneflow/core/job/cluster_instruction.proto
index 9b564acb790d760bd8d37ffd1023f0d7c9f86fdd..c313225e4f32d846ce909d45aa796ff2c1cfc13c 100644
--- a/oneflow/core/job/cluster_instruction.proto
+++ b/oneflow/core/job/cluster_instruction.proto
@@ -1,6 +1,8 @@
 syntax = "proto2";
 package oneflow;
 
+import "oneflow/core/eager/eager_instruction.proto";
+
 message ClusterCtrlSessionStart {}
 message ClusterCtrlHalt {}
 
@@ -8,5 +10,6 @@ message ClusterInstructionProto {
   oneof instruction_type {
     ClusterCtrlSessionStart cluster_ctrl_session_start = 1;
     ClusterCtrlHalt cluster_ctrl_halt = 2;
+    eager.EagerInstruction eager_instruction = 3;
   }
 }
diff --git a/oneflow/python/oneflow_internal_helper.h b/oneflow/python/oneflow_internal_helper.h
index ed7e43ca1a0013a860728f5c75915afcbcec781a..e0d461de192d02fb4dbbd6a36d0fa01305a64ae1 100644
--- a/oneflow/python/oneflow_internal_helper.h
+++ b/oneflow/python/oneflow_internal_helper.h
@@ -44,7 +44,7 @@ limitations under the License.
 #include "oneflow/core/vm/instruction.pb.h"
 #include "oneflow/core/vm/vm_util.h"
 #include "oneflow/core/vm/id_util.h"
-#include "oneflow/core/eager/eager_util.h"
+#include "oneflow/core/eager/eager_oneflow.h"
 #include "oneflow/core/eager/eager_symbol_storage.h"
 
 #ifdef WITH_TENSORRT
@@ -271,12 +271,14 @@ Maybe<long> GetOpParallelSymbolId(const std::string& op_conf_str) {
 
 Maybe<void> RunLogicalInstruction(const std::string& instruction_list_str,
                                   const std::string& eager_symbol_list_str) {
-  return eager::RunLogicalInstruction(instruction_list_str, eager_symbol_list_str);
+  return Global<eager::EagerOneflow>::Get()->RunLogicalInstruction(instruction_list_str,
+                                                                   eager_symbol_list_str);
 }
 
 Maybe<void> RunPhysicalInstruction(const std::string& instruction_list_str,
                                    const std::string& eager_symbol_list_str) {
-  return eager::RunPhysicalInstruction(instruction_list_str, eager_symbol_list_str);
+  return Global<eager::EagerOneflow>::Get()->RunPhysicalInstruction(instruction_list_str,
+                                                                    eager_symbol_list_str);
 }
 
 Maybe<long long> CurrentMachineId() {
diff --git a/oneflow/python/test/ops/test_ccrelu.py b/oneflow/python/test/ops/test_ccrelu.py
index 00620beba74cde61d17cc5c3484d2912dee51466..0d6e164680796772dd88f0d631c7d6e74db3a544 100644
--- a/oneflow/python/test/ops/test_ccrelu.py
+++ b/oneflow/python/test/ops/test_ccrelu.py
@@ -89,7 +89,28 @@ def test_1n2c_mirror_dynamic_ccrelu(test_case):
 
 
 @flow.unittest.num_nodes_required(2)
-def test_ccrelu_2n1c(test_case):
+def test_ccrelu_2n1c_0(test_case):
+    func_config = flow.FunctionConfig()
+    func_config.default_logical_view(flow.scope.consistent_view())
+    fixed_tensor_def_test(test_case, func_config)
+
+
+@flow.unittest.num_nodes_required(2)
+def test_ccrelu_2n1c_1(test_case):
+    func_config = flow.FunctionConfig()
+    func_config.default_logical_view(flow.scope.consistent_view())
+    fixed_tensor_def_test(test_case, func_config)
+
+
+@flow.unittest.num_nodes_required(2)
+def test_ccrelu_2n1c_2(test_case):
+    func_config = flow.FunctionConfig()
+    func_config.default_logical_view(flow.scope.consistent_view())
+    fixed_tensor_def_test(test_case, func_config)
+
+
+@flow.unittest.num_nodes_required(2)
+def test_ccrelu_2n1c_3(test_case):
     func_config = flow.FunctionConfig()
     func_config.default_logical_view(flow.scope.consistent_view())
     fixed_tensor_def_test(test_case, func_config)