Hi Could you specify few things -
(a) The version of PG Compilers being used both for HPMPI & OMPI. Is the compilers same or the version same? (b) Could you share the configure command given for OMPI with PG compilers? (c) Could you compare the threads enable/disable for both cases needed? (d) Is ptmalloc2 being enabled/disabled for HPMPI or with IB end, could you analyze the same with OPMPI too? (e) Could you mail the log files for both. BR Mukesh srimk...@gmail.com