diff --git a/src/framework/cl/cl_engine.cpp b/src/framework/cl/cl_engine.cpp
index 9ac67a1ce5680de21f7a0c98d006de0cbbbbe941..9aae49d21664da9095b7e3a3acc90f9904f3c975 100644
--- a/src/framework/cl/cl_engine.cpp
+++ b/src/framework/cl/cl_engine.cpp
@@ -26,12 +26,13 @@ bool CLEngine::Init() {
   cl_int status;
   SetPlatform();
   SetClDeviceId();
+  initialized_ = true;
+
 //  setClContext();
 //  setClCommandQueue();
 //  std::string filename = "./HelloWorld_Kernel.cl";
 //  loadKernelFromFile(filename.c_str());
 //  buildProgram();
-  initialized_ = true;
 }
 
 CLEngine *CLEngine::Instance() {
@@ -39,20 +40,6 @@ CLEngine *CLEngine::Instance() {
   return &cl_engine_;
 }
 
-//std::unique_ptr<_cl_kernel, clKernel_deleter> CLEngine::GSetKernel(
-//    const std::string &kernel_name) {
-//  std::unique_ptr<_cl_kernel, clKernel_deleter> kernel(
-//      clCreateKernel(program_.get(), kernel_name.c_str(), NULL));
-//  return std::move(kernel);
-//}
-//
-//bool CLEngine::SetClCommandQueue() {
-//  cl_int status;
-//  command_queue_.reset(
-//          clCreateCommandQueue(context_.get(), devices_[0], 0, &status));
-//  return true;
-//}
-
 bool CLEngine::SetPlatform() {
   platform_ = NULL;      // the chosen platform
   cl_uint numPlatforms;  // the NO. of platforms
@@ -87,6 +74,20 @@ bool CLEngine::SetClDeviceId() {
   return false;
 }
 
+//std::unique_ptr<_cl_kernel, clKernel_deleter> CLEngine::GSetKernel(
+//    const std::string &kernel_name) {
+//  std::unique_ptr<_cl_kernel, clKernel_deleter> kernel(
+//      clCreateKernel(program_.get(), kernel_name.c_str(), NULL));
+//  return std::move(kernel);
+//}
+//
+//bool CLEngine::SetClCommandQueue() {
+//  cl_int status;
+//  command_queue_.reset(
+//          clCreateCommandQueue(context_.get(), devices_[0], 0, &status));
+//  return true;
+//}
+
 //bool CLEngine::SetClContext() {
 //  context_.reset(clCreateContext(NULL, 1, devices_, NULL, NULL, NULL));
 //  return true;
diff --git a/src/framework/cl/cl_engine.h b/src/framework/cl/cl_engine.h
index 691c9a4f73d89819b851a4391cc0a7e8d8c0434a..14167f0edf846e20511d19e8b235005f52a7cae0 100644
--- a/src/framework/cl/cl_engine.h
+++ b/src/framework/cl/cl_engine.h
@@ -16,7 +16,6 @@ limitations under the License. */
 
 #include <memory>
 #include <string>
-#include <fstream>
 
 #include "common/enforce.h"
 #include "framework/cl/cl_deleter.h"
@@ -45,25 +44,23 @@ class CLEngine {
   }
 
   std::unique_ptr<_cl_program, CLProgramDeleter> CreateProgramWith(cl_context context, std::string file_name) {
-    const char *kernel_file = file_name.c_str();
-    size_t size;
-    char *str;
-    std::fstream f(kernel_file, (std::fstream::in | std::fstream::binary));
 
-    PADDLE_MOBILE_ENFORCE(f.is_open(), " file open failed")
 
-    size_t fileSize;
-    f.seekg(0, std::fstream::end);
-    size = fileSize = (size_t)f.tellg();
-    f.seekg(0, std::fstream::beg);
-    str = new char[size+1];
-
-    PADDLE_MOBILE_ENFORCE(str != NULL, " str null")
-
-    f.read(str, fileSize);
-    f.close();
-    str[size] = '\0';
-    const char *source = str;
+    FILE *file = fopen(file_name.c_str(), "rb");
+    PADDLE_MOBILE_ENFORCE(file != nullptr, "can't open file: %s ",
+                          filename.c_str());
+    fseek(file, 0, SEEK_END);
+    int64_t size = ftell(file);
+    PADDLE_MOBILE_ENFORCE(size > 0, "size is too small");
+    rewind(file);
+    char *data = new char[size + 1];
+    size_t bytes_read = fread(data, 1, size, file);
+    data[size] = '\0';
+    PADDLE_MOBILE_ENFORCE(bytes_read == size,
+                          "read binary file bytes do not match with fseek");
+    fclose(file);
+
+    const char *source = data;
     size_t sourceSize[] = {strlen(source)};
     cl_program p = clCreateProgramWithSource(context, 1, &source, sourceSize, NULL);
     std::unique_ptr<_cl_program, CLProgramDeleter> program_ptr(p);
@@ -84,13 +81,6 @@ class CLEngine {
 
   bool SetClDeviceId();
 
-//  bool SetClContext();
-
-//  bool SetClCommandQueue();
-
-//  bool LoadKernelFromFile(const char *kernel_file);
-
-//  bool BuildProgram();
 
   bool initialized_;
 
@@ -103,6 +93,15 @@ class CLEngine {
   std::unique_ptr<_cl_command_queue, CLCommQueueDeleter> command_queue_;
 
   std::unique_ptr<_cl_program, CLProgramDeleter> program_;
+
+//  bool SetClContext();
+
+//  bool SetClCommandQueue();
+
+//  bool LoadKernelFromFile(const char *kernel_file);
+
+//  bool BuildProgram();
+
 };
 
 }  // namespace framework
diff --git a/src/framework/scope.h b/src/framework/scope.h
index 06ae469cc5c7cecf19d81c8fcb18b79ce7efc23d..7e8a9a38bf84135b79cc428e01c20712fa71e6d3 100644
--- a/src/framework/scope.h
+++ b/src/framework/scope.h
@@ -93,7 +93,7 @@ class Scope {
   mutable std::unordered_map<std::string, Variable *> vars_;
   mutable std::list<Scope *> kids_;
   Scope const *parent_{nullptr};
-//#ifdef  PADDLE_MOBILE_OCL
+//#ifdef  PADDLE_MOBILE_CL
   CLScope *cl_scope_ = new CLScope();
 //#endif
 };