Fix is on the way: https://github.com/open-mpi/ompi/pull/2498 <https://github.com/open-mpi/ompi/pull/2498>
Thanks Ralph > On Dec 1, 2016, at 10:49 AM, r...@open-mpi.org wrote: > > Yeah, that’s a bug - we’ll have to address it > > Thanks > Ralph > >> On Nov 28, 2016, at 9:29 AM, Noel Rycroft <noel.rycr...@cd-adapco.com >> <mailto:noel.rycr...@cd-adapco.com>> wrote: >> >> I'm seeing different behaviour between Open MPI 1.8.4 and 2.0.1 with regards >> to signal propagation. >> >> With version 1.8.4 mpirun seems to propagate SIGTERM to the tasks it starts >> which enables the tasks to handle SIGTERM. >> >> In version 2.0.1 mpirun does not seem to propagate SIGTERM and instead I >> suspect it's sending SIGKILL immediately. Because the child tasks are not >> given a chance to handle SIGTERM they end up orphaning their child processes. >> >> I have a pretty simply reproducer which consists of: >> A simple MPI application that sleeps for a number of seconds. >> A simple bash script which launches mpirun. >> A second bash script which is used to launch a 'child' MPI application >> 'sleep' binary >> Both scripts launch their children in the background, and 'wait' on >> completion. They both install signal handlers for SIGTERM. >> >> When SIGTERM is sent to the top level script it is explicitly propagated to >> 'mpirun' via the signal handler. >> >> In Open MPI 1.8.4 SIGTERM is propagated to the child MPI tasks which in turn >> explicitly propagate the signal to the child binary processes. >> >> In Open MPI 2.0.1 I see no evidence that SIGTERM is propagated to the child >> MPI tasks. Instead those tasks are killed and their children (the >> application binaries) are orphaned. >> >> Is the difference in behaviour between the different versions expected..? >> _______________________________________________ >> users mailing list >> users@lists.open-mpi.org <mailto:users@lists.open-mpi.org> >> https://rfd.newmexicoconsortium.org/mailman/listinfo/users > > _______________________________________________ > users mailing list > users@lists.open-mpi.org > https://rfd.newmexicoconsortium.org/mailman/listinfo/users
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