Dear Sir/Madam Greetings of the day !! I have installed the MPICH3 on RHEL5 with the steps give in the installation manual inside the tar file of Mpich3 . I am using a cluster of 3 systems with all the settings done as suggested by the manual , and successfully able to run the example given inside the package i.e. Pi value calculation (cpi) using the command $mpiexec -n 6 -f machinefile ./cpi Now when I am running some other process or some other examples the following error is getting generated about which I have no clues how to get rid of the error Here I am listing the programm and the command I am using and error generating NANO35 if my master node [user@NANO35 test]$ mpiexec -n 6 -f /home/user/machinefile ./mpi_hello [mpiexec@NANO35] control_cb (pm/pmiserv/pmiserv_cb.c:200): assert (!closed) failed [mpiexec@NANO35] HYDT_dmxu_poll_wait_for_event (tools/demux/demux_poll.c:76): callback returned error status [mpiexec@NANO35] HYD_pmci_wait_for_completion (pm/pmiserv/pmiserv_pmci.c:198): error waiting for event [mpiexec@NANO35] main (ui/mpich/mpiexec.c:344): process manager error waiting for completion Machinefile looks like NANO35:2 NANO36:2 NANO37:2 NANO38:2 *PFA* : LOG Files regards Vipan SHARMA _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss