Could you tell me if the VSX-PCTS Test Suite includes the VSTHlite Test Suite for the POSIX96 pthreads? Is that why there are difference results on x86 for SMP? George Kraft IV gk4@us.ibm.com 512-838-2688; t/l 678-2688 IBM Linux Technology Center http://oss.software.ibm.com/developerworks/opensource/linux/ FSG's Linux Standard Base http://sourceforge.net/projects/lsb/