Re: [OMPI users] Question on suspending/resuming MPI processes with SIGSTOP

2014-04-11 Thread Frank Wein
Frank Wein wrote: [...] Or basically my question could also be rephrased as: Is there a barrier mechanism I could use in OMPI that causes basically very few to no CPU usage (with higher latency then)? Intel MPI for example seems to have the env var "I_MPI_WAIT_MODE=1" which uses

[OMPI users] Question on suspending/resuming MPI processes with SIGSTOP

2014-04-11 Thread Frank Wein
Hi, I've got a question on suspending/resuming an process started with "mpirun", I've already found the FAQ entry on this http://www.open-mpi.de/faq/?category=running#suspend-resume but I've still got a question on this. Basically for now let's assume I'm running all MPI processes on one host only