diff --git a/core/predictor/framework/dag_view.cpp b/core/predictor/framework/dag_view.cpp
index 29a4e97378c20d6f9caae8a97de7dc5f714960e9..64383514f604688a085097a7ec0043c91f25a9b4 100644
--- a/core/predictor/framework/dag_view.cpp
+++ b/core/predictor/framework/dag_view.cpp
@@ -21,6 +21,15 @@
 #include <string>
 #include "core/predictor/common/inner_common.h"
 #include "core/predictor/framework/op_repository.h"
+#ifdef BCLOUD
+#include <base/atomicops.h>
+#else
+#include <butil/atomicops.h>
+#endif
+#include <errno.h>
+
+#include "core/predictor/framework/resource.h"
+using baidu::paddle_serving::predictor::Resource;
 
 namespace baidu {
 namespace paddle_serving {
@@ -238,6 +247,77 @@ const Channel* DagView::get_response_channel(const uint64_t log_id) const {
   return last_op->mutable_channel();
 }
 
+void* call_back(void* ori_args) {
+  Resource::instance().thread_initialize();
+  Args* args = (Args*)ori_args;
+  Op* op = static_cast<Op*>(args->_op);
+  uint64_t log_id = static_cast<uint64_t>(args->_log_id);
+  bool debug = static_cast<bool>(args->_debug);
+  args->errcode = op->process(log_id, debug);
+  return nullptr;
+}
+
+int ParallelDagView::execute_one_stage(ViewStage* vstage,
+                                       const uint64_t log_id,
+                                       butil::IOBufBuilder* debug_os) {
+  butil::Timer stage_time(butil::Timer::STARTED);
+  uint32_t node_size = vstage->nodes.size();
+  std::vector<THREAD_T> tids(node_size);
+  Args* args = new Args[node_size];
+  VLOG(2) << "(logid=" << log_id << ") vstage->nodes.size(): " << node_size;
+  for (uint32_t ni = 0; ni < node_size; ni++) {
+    ViewNode* vnode = vstage->nodes[ni];
+    DagNode* conf = vnode->conf;
+    Op* op = vnode->op;
+    TRACEPRINTF(
+        "(logid=%" PRIu64 ") start to execute op[%s]", log_id, op->name());
+
+    args[ni]._op = op;
+    args[ni]._log_id = log_id;
+    args[ni]._debug = (debug_os != NULL);
+    int rc = THREAD_CREATE(&tids[ni], NULL, call_back, (void*)(args + ni));
+    if (rc != 0) {
+      LOG(ERROR) << "failed to create ParallelDagView worker thread: index="
+                 << ni << ", rc=" << rc << ", errno=" << errno << ":"
+                 << strerror(errno);
+      delete[] args;
+      return -1;
+    }
+  }
+  for (uint32_t ni = 0; ni < node_size; ni++) {
+    THREAD_JOIN(tids[ni], NULL);
+    int errcode = args[ni].errcode;
+    Op* op = args[ni]._op;
+    TRACEPRINTF(
+        "(logid=%" PRIu64 ") finish to execute op[%s]", log_id, op->name());
+    if (errcode < 0) {
+      LOG(ERROR) << "(logid=" << log_id
+                 << ") Execute failed, Op:" << op->debug_string();
+      delete[] args;
+      return errcode;
+    }
+
+    if (errcode > 0) {
+      LOG(INFO) << "(logid=" << log_id
+                << ") Execute ignore, Op:" << op->debug_string();
+      continue;
+    }
+
+    if (debug_os) {
+      (*debug_os) << "(logid=" << log_id << ") {\"op_name\": \"" << op->name()
+                  << "\", \"debug_str:\": \"" << op->debug_string()
+                  << "\", \"time_info\": \"" << op->time_info() << "\"}";
+    }
+
+    // LOG(DEBUG) << "Execute succ, Op:" << op->debug_string();
+  }
+  stage_time.stop();
+  PredictorMetric::GetInstance()->update_latency_metric(
+      STAGE_METRIC_PREFIX + vstage->full_name, stage_time.u_elapsed());
+  delete[] args;
+  return ERR_OK;
+}
+
 }  // namespace predictor
 }  // namespace paddle_serving
 }  // namespace baidu
diff --git a/core/predictor/framework/dag_view.h b/core/predictor/framework/dag_view.h
index 8ba9d224c577b475d0a52b79e92f72bd1abaa187..5b12238396e359069fff2ce288eba3724ca0a764 100644
--- a/core/predictor/framework/dag_view.h
+++ b/core/predictor/framework/dag_view.h
@@ -24,7 +24,7 @@ namespace baidu {
 namespace paddle_serving {
 namespace predictor {
 
-class Op;
+// class Op;
 
 struct ViewNode {
   Op* op;  // op->full_name == service_workflow_stageindex_opname
@@ -75,11 +75,20 @@ class DagView {
   Bus* _bus;
 };
 
+struct Args {
+  Op* _op;
+  uint64_t _log_id;
+  bool _debug;
+  int errcode;
+};
+
 // The derived DagView supports parallel execution
 // strategy, by implments the execute_one_stage().
 class ParallelDagView : public DagView {
  public:
-  int execute_one_stage(ViewStage* vstage, butil::IOBufBuilder*) { return 0; }
+  virtual int execute_one_stage(ViewStage* vstage,
+                                const uint64_t log_id,
+                                butil::IOBufBuilder* debug_os);
 };
 
 }  // namespace predictor
diff --git a/core/predictor/framework/service.cpp b/core/predictor/framework/service.cpp
old mode 100644
new mode 100755
diff --git a/core/predictor/framework/service.h b/core/predictor/framework/service.h
old mode 100644
new mode 100755