fix path

mindspore/ccsrc/debug/data_dump/dump_json_parser.cc

@@ -364,11 +364,11 @@ void DumpJsonParser::PrintUnusedKernel() {
 std::string DumpJsonParser::GetOpOverflowBinPath(uint32_t graph_id, uint32_t device_id) const {
   std::string bin_path;
   bin_path.append(path_);
-  bin_path.append("_");
+  bin_path.append("device_");
   bin_path.append(std::to_string(device_id));
   bin_path.append("/");
   bin_path.append(net_name_);
-  bin_path.append("_");
+  bin_path.append("_graph_");
   bin_path.append(std::to_string(graph_id));
   bin_path.append("/");
   bin_path.append(std::to_string(dump_mode_));