Re: [OMPI users] Where can a graph communicator be used?

2022-02-15 Thread Neil Carlson via users
tor would behave as a normal, fully connected, > communicator. > > George. > > > On Tue, Feb 15, 2022 at 9:28 AM Neil Carlson via users < > users@lists.open-mpi.org> wrote: > >> >> >> On Mon, Feb 14, 2022 at 9:01 PM George Bosilca >> wrote

Re: [OMPI users] Where can a graph communicator be used?

2022-02-15 Thread Neil Carlson via users
On Mon, Feb 14, 2022 at 9:01 PM George Bosilca wrote: > On Mon, Feb 14, 2022 at 6:33 PM Neil Carlson via users < > users@lists.open-mpi.org> wrote: > >> 1. Where can I use this communicator? Can it be used with the usual >> stuff like MPI_Allgather, or do I nee

[OMPI users] Where can a graph communicator be used?

2022-02-14 Thread Neil Carlson via users
I've been successful at using MPI_Dist_graph_create_adjacent to create a new communicator with graph topology, and using it with MPI_Neighbor_alltoallv. But I have a few questions: 1. Where can I use this communicator? Can it be used with the usual stuff like MPI_Allgather, or do I need to hang