Hello everyone, After installing mpich, I ran the examples and keep getting this stack error: tds@ubuntu:~/Downloads/mpich-3.1.3$ mpiexec -f machinefile -n 2 ./examples/cpi Warning: Permanently added the ECDSA host key for IP address '192.168.201.138' to the list of known hosts. Process 0 of 2 is on ubuntu Fatal error in PMPI_Reduce: Unknown error class, error stack: PMPI_Reduce(1263)...............: MPI_Reduce(sbuf=0x7fff3f86da00, rbuf=0x7fff3f86da08, count=1, MPI_DOUBLE, MPI_SUM, root=0, MPI_COMM_WORLD) failed MPIR_Reduce_impl(1075)..........: MPIR_Reduce_intra(881)..........: MPIR_Reduce_binomial(188).......: MPIDI_CH3U_Recvq_FDU_or_AEP(636): Communication error with rank 1 =================================================================================== = BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES = PID 7563 RUNNING AT ubuntu = EXIT CODE: 1 = CLEANING UP REMAINING PROCESSES = YOU CAN IGNORE THE BELOW CLEANUP MESSAGES =================================================================================== [proxy:0:1@ubuntu-clone] HYD_pmcd_pmip_control_cmd_cb (pm/pmiserv/pmip_cb.c:885): assert (!closed) failed [proxy:0:1@ubuntu-clone] HYDT_dmxu_poll_wait_for_event (tools/demux/demux_poll.c:76): callback returned error status [proxy:0:1@ubuntu-clone] main (pm/pmiserv/pmip.c:206): demux engine error waiting for event [mpiexec@ubuntu] HYDT_bscu_wait_for_completion (tools/bootstrap/utils/bscu_wait.c:76): one of the processes terminated badly; aborting [mpiexec@ubuntu] HYDT_bsci_wait_for_completion (tools/bootstrap/src/bsci_wait.c:23): launcher returned error waiting for completion [mpiexec@ubuntu] HYD_pmci_wait_for_completion (pm/pmiserv/pmiserv_pmci.c:218): launcher returned error waiting for completion [mpiexec@ubuntu] main (ui/mpich/mpiexec.c:344): process manager error waiting for completion Since I’m pretty new to the MPI world, I kinda can’t get what did I did wrong - Did I do something wrong with ssh? Was it something else? System Specifications: - Ubuntu 14.04 64 bits - gcc version 4.8.2 - While installing, fortran support was disable - This system is running on a virtual machine Network Specification: - Two machines with the specifications above in a private virtual network - One machine is called ubuntu and the other one is ubuntu-clone Host Files: - ubuntu - ubuntu - ubuntu-clone - ubuntu-clone - ubuntu-clone - ubuntu As you can see, the stack trace is from a command running on host ubuntu. The same error is razed when I run the same command on host ubuntu-clone. Can anyone help me getting where I messed up? Thanks in advance _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss