Abstract: Hardware locks provide the atomic operation mechanism of "load and add one" or "load and subtract one" by simple load instructions．Firstly,we introduced the implementation of hardware locks in general purpose multi-core multi-threaded FT processors,and compared with the software lock mechanism,then described the method for synchronization of multi-threading using hardware locks．In the GNU OpenMP runtime library,we designed and implemented the synchronization mechanism based on hardware locks for FT processors．Finally,we evaluated the performance of typical OpenMP programs using hardware locks versus using software locks and gave some valuable analysis.

Key words: Hardware locks,Synchronization,FT processor,GNU OpenMP runtimes