Re: [OMPI users] IMB-MPI1 stuck at MPI_Finalize with OpenMPI 1.10.0

2015-10-23 Thread Zhi Zhang
Hi Ralph, We haven't got a chance to test the nightly build yet. The jobs were launched with separate mpirun's in a loop. Best, Zhi -Original Message- From: users [mailto:users-boun...@open-mpi.org] On Behalf Of Ralph Castain Sent: Wednesday, October 21, 2015 03:38 To: Open MPI Users Su

[OMPI users] Finding amount of pinned memory & regions

2015-10-23 Thread Sasso, John (GE Power & Water, Non-GE)
Pardon if this has been addressed already, but I could not find the answer after going through the OpenMPI FAQ and doing Google searches of the open-mpi.org site. We are in the process of analyzing and troubleshooting MPI jobs of increasingly large scale (OpenMPI 1.6.5). At a sufficiently larg

Re: [OMPI users] Questions about non-blocking collective calls...

2015-10-23 Thread George Bosilca
Eric, A tree based implementation for a gather is not that critical, because the root will always have to gather the entire data, so from it’s perspective going from a star to a tree-based topology is basically exchanging latencies for bandwidth (a little bit more complicated in practice). In f