Created by: kexinzhao

Fix #7610 (closed)

The API is a little bit different than in #7610 (closed). I encountered memory issue when using std::map<std::string, LoDTensor>. So I changed to pointer instead.

  void Run(const ProgramDesc& program, Scope* scope,
           std::map<std::string, const LoDTensor*>& feed_targets,
           std::map<std::string, LoDTensor*>& fetch_targets,
           const std::string& feed_holder_name = "feed",
           const std::string& fetch_holder_name = "fetch");