My 0.02USD says that for pragmatic reasons one should attempt to
terminate the job in this case, regardless of ones opinion of this
unusual application behavior.
-Paul
Ralph Castain wrote:
Hi folks
In case you didn't follow this on the user list, we had a question come up
about proper OMPI behavior. Basically, the user has an application where one
process decides it should cleanly terminate prior to calling MPI_Init, but all
the others go ahead and enter MPI_Init. The application hangs since we don't
detect the one proc's exit as an abnormal termination (no segfault, and it
didn't call MPI_Init so it isn't required to call MPI_Finalize prior to
termination).
I can probably come up with a way to detect this scenario and abort it. But
before I spend the effort chasing this down, my question to you MPI folks is:
What -should- OMPI do in this situation? We have never previously detected such behavior
- was this an oversight, or is this simply a "bad" application?
Thanks
Ralph
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Paul H. Hargrove phhargr...@lbl.gov
Future Technologies Group Tel: +1-510-495-2352
HPC Research Department Fax: +1-510-486-6900
Lawrence Berkeley National Laboratory
