Re: [OMPI users] barrier algorithm 5

2016-05-06 Thread Dave Love
Gilles Gouaillardet writes: > Dave, > > > i made PR #1644 to abort with a user friendly error message > > https://github.com/open-mpi/ompi/pull/1644 Thanks. Could there be similar cases that might be worth a change?

Re: [OMPI users] barrier algorithm 5

2016-05-06 Thread Gilles Gouaillardet
Dave, i made PR #1644 to abort with a user friendly error message https://github.com/open-mpi/ompi/pull/1644 Cheers, Gilles On 5/5/2016 2:05 AM, Dave Love wrote: Gilles Gouaillardet writes: Dave, yes, this is for two MPI tasks only. the MPI subroutine could/should return with an err

Re: [OMPI users] barrier algorithm 5

2016-05-04 Thread Dave Love
Gilles Gouaillardet writes: > Dave, > > yes, this is for two MPI tasks only. > > the MPI subroutine could/should return with an error if the communicator is > made of more than 3 tasks. > an other option would be to abort at initialization time if no collective > modules provide a barrier impleme

Re: [OMPI users] barrier algorithm 5

2016-05-04 Thread Gilles Gouaillardet
Dave, yes, this is for two MPI tasks only. the MPI subroutine could/should return with an error if the communicator is made of more than 3 tasks. an other option would be to abort at initialization time if no collective modules provide a barrier implementation. or maybe the tuned module should ha