Dear All, I apologize for the late update. We have been studying the performance issues for the non POSIX env. We have no remarkable result last week. Regards, Jongmin -- Jongmin Gim Post-Doctoral Research Associate Dept. of Elecrical and Computer Enginerring Texas A&M University 333B Wisenbaker College Station, TX 77843-3259 Phone: 979-587-8311