I would tend to agree with Paul. It's uncommon (e.g., no one has run into this before now), and I would say that this is a bad application. But then again, hanging is bad -- so it would be better to abort/terminate the whole job in this scenario.
I don't know how I would rate the priority of this, but it would be nice to have someday. On Dec 15, 2009, at 11:17 PM, Ralph Castain wrote: > Understandable - and we can count on your patch in the near future, then? :-) > > On Dec 15, 2009, at 9:12 PM, Paul H. Hargrove wrote: > > > 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 > >> > >> > >> _______________________________________________ > >> devel mailing list > >> de...@open-mpi.org > >> http://www.open-mpi.org/mailman/listinfo.cgi/devel > >> > > > > > > -- > > 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 > > _______________________________________________ > > devel mailing list > > de...@open-mpi.org > > http://www.open-mpi.org/mailman/listinfo.cgi/devel > > > _______________________________________________ > devel mailing list > de...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/devel > -- Jeff Squyres jsquy...@cisco.com
