Hi, Csaba Thanks for the tip. My PS3 workstationn is installed a 32-bit OS. I will install a 64-bit OS soon and try what you said. Thanks again. Regards, chenwj -- Wei-Ren Chen (陳韋任) Parallel Processing Lab, Institute of Information Science, Academia Sinica, Taiwan (R.O.C.) Tel:886-2-2788-3799 #1667