diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 5a6afc01..21fb3957 100644
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-          <caret line="12" column="16" selection-start-line="12" selection-start-column="16" selection-end-line="12" selection-end-column="16" />
-        </state>
-      </provider>
-    </entry>
     <entry file="file://$PROJECT_DIR$/include/sita/dlflow/operators/add_op.h">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="192">
@@ -785,8 +660,8 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/src/sita/dataprovider/mnist_dataprovider.cpp">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="320">
-          <caret line="20" column="19" selection-start-line="20" selection-start-column="19" selection-end-line="20" selection-end-column="19" />
+        <state relative-caret-position="464">
+          <caret line="29" column="5" lean-forward="true" selection-start-line="29" selection-start-column="5" selection-end-line="29" selection-end-column="5" />
           <folding>
             <element signature="e#99#115#0" expanded="true" />
             <element signature="e#345#361#0" expanded="true" />
@@ -794,5 +669,50 @@
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/include/sita/dlflow/operators/data_test_op.h">
+      <provider selected="true" editor-type-id="text-editor" />
+    </entry>
+    <entry file="file://$PROJECT_DIR$/include/sita/macros.h">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="1152">
+          <caret line="72" column="22" selection-start-line="72" selection-start-column="22" selection-end-line="72" selection-end-column="22" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/include/sita/io_protobuff.h">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="480">
+          <caret line="30" column="28" selection-start-line="30" selection-start-column="9" selection-end-line="30" selection-end-column="28" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/include/sita/internal_thread.h">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="192">
+          <caret line="12" column="16" selection-start-line="12" selection-start-column="16" selection-end-line="12" selection-end-column="16" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/sita/io_protobuff.cpp">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="272">
+          <caret line="17" column="1" lean-forward="true" selection-start-line="17" selection-start-column="1" selection-end-line="17" selection-end-column="1" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/include/sita/workspace.h">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="-624">
+          <caret line="15" column="22" selection-start-line="15" selection-start-column="22" selection-end-line="15" selection-end-column="22" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/sita/dlflow/graph.cpp">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="112">
+          <caret line="7" column="29" selection-start-line="7" selection-start-column="29" selection-end-line="7" selection-end-column="29" />
+        </state>
+      </provider>
+    </entry>
   </component>
 </project>
\ No newline at end of file
diff --git a/build/CMakeFiles/sita.dir/src/sita/dataprovider/mnist_dataprovider.cpp.o b/build/CMakeFiles/sita.dir/src/sita/dataprovider/mnist_dataprovider.cpp.o
index 0f6e349a..3fa615be 100644
Binary files a/build/CMakeFiles/sita.dir/src/sita/dataprovider/mnist_dataprovider.cpp.o and b/build/CMakeFiles/sita.dir/src/sita/dataprovider/mnist_dataprovider.cpp.o differ
diff --git a/build/CMakeFiles/sita.dir/src/sita/dlflow/graph.cpp.o b/build/CMakeFiles/sita.dir/src/sita/dlflow/graph.cpp.o
index d537a220..a1b16ccd 100644
Binary files a/build/CMakeFiles/sita.dir/src/sita/dlflow/graph.cpp.o and b/build/CMakeFiles/sita.dir/src/sita/dlflow/graph.cpp.o differ
diff --git a/build/CMakeFiles/sita.dir/src/sita/io_protobuff.cpp.o b/build/CMakeFiles/sita.dir/src/sita/io_protobuff.cpp.o
index 666e0317..782eb019 100644
Binary files a/build/CMakeFiles/sita.dir/src/sita/io_protobuff.cpp.o and b/build/CMakeFiles/sita.dir/src/sita/io_protobuff.cpp.o differ
diff --git a/build/sita b/build/sita
index b1c1f5d7..cc2944c3 100755
Binary files a/build/sita and b/build/sita differ
diff --git a/include/sita/io_protobuff.h b/include/sita/io_protobuff.h
index e4785e40..8b6f5b03 100644
--- a/include/sita/io_protobuff.h
+++ b/include/sita/io_protobuff.h
@@ -27,7 +27,9 @@ namespace  sita{
     using google::protobuf::io::ZeroCopyOutputStream;
     using google::protobuf::io::CodedOutputStream;
     using google::protobuf::Message;
-    bool ReadProtoFromTextFile(const char* filename, Message* proto);
+
+    bool read_proto_from_txt(const char* filename, Message* proto);
+
 }
 
 #endif //SITA_IO_PROTOBUFF_H
diff --git a/src/sita/dlflow/graph.cpp b/src/sita/dlflow/graph.cpp
index 8bba9739..579e3f20 100644
--- a/src/sita/dlflow/graph.cpp
+++ b/src/sita/dlflow/graph.cpp
@@ -5,7 +5,7 @@
 namespace sita{
 
 Graph::Graph(std::string model_file){
-    CHECK(ReadProtoFromTextFile(model_file.c_str(), &_graph))
+    CHECK(read_proto_from_txt(model_file.c_str(), &_graph))
             << "Failed to parse SolverParameter file: " << model_file;
 }
 
diff --git a/src/sita/io_protobuff.cpp b/src/sita/io_protobuff.cpp
index 75ec3562..8b93d1fe 100644
--- a/src/sita/io_protobuff.cpp
+++ b/src/sita/io_protobuff.cpp
@@ -6,7 +6,7 @@
 
 namespace sita{
 
-    bool ReadProtoFromTextFile(const char* filename, Message* proto) {
+    bool read_proto_from_txt(const char* filename, Message* proto) {
         int fd = open(filename, O_RDONLY);
         CHECK_NE(fd, -1) << "File not found: " << filename;
         FileInputStream* input = new FileInputStream(fd);