Hello Group, Is the following statement option -F still correct? dave@ubuntu-desk:/home/mpiuser/cloud$ sudo mpiexec -f hosts.cfg -n 4 ./hello [sudo] password for dave: -------------------------------------------------------------------------- mpiexec was unable to launch the specified application as it could not find an executable: Executable: -f Node: ubuntu-desk while attempting to start process rank 0. ================================== I tried it another way too with same result: dave@ubuntu-desk:/home/mpiuser/cloud$ sudo mpiexec -n 8 machinefile ./hello -------------------------------------------------------------------------- mpiexec noticed that the job aborted, but has no info as to the process that caused that situation. -------------------------------------------------------------------------- Machine file, two lines, one for each machine in the network. Each with SSH and mpich2: ubuntu-desk-2:2 # ubuntu-desk # -------------------------------------------------------------------------- Any ideas about mpiexec statement or anything else to get these machines talking? Dave _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss