Re: [OMPI users] Timeout in MPI_Bcast/MPI_Barrier?

2021-01-08 Thread Gilles Gouaillardet via users
Daniel, Can you please post the full error message and share a reproducer for this issue? Cheers, Gilles On Fri, Jan 8, 2021 at 10:25 PM Daniel Torres via users wrote: > > Hi all. > > Actually I'm implementing an algorithm that creates a process grid and > divides it into row and column

[OMPI users] Timeout in MPI_Bcast/MPI_Barrier?

2021-01-08 Thread Daniel Torres via users
Hi all. Actually I'm implementing an algorithm that creates a process grid and divides it into row and column communicators as follows:         col_comm0    col_comm1    col_comm2 col_comm3 row_comm0    P0           P1           P2        P3 row_comm1    P4           P5           P6      

Re: [OMPI users] Timeout in MPI_Bcast/MPI_Barrier?

2021-01-08 Thread George Bosilca via users
Daniel, There are no timeouts in OMPI with the exception of the initial connection over TCP, where we use the socket timeout to prevent deadlocks. As you already did quite a few communicator duplications and other collective communications before you see the timeout, we need more info about this.

[OMPI users] Confusing behaviour of compiler wrappers

2021-01-08 Thread Sajid Ali via users
Hi OpenMPI-community, This is a cross post from the following spack issue : https://github.com/spack/spack/issues/20756 In brief, when I install openmpi@4.1.0 with ucx and xpmem fabrics, the behaviour of the compiler wrappers (mpicc) seems to depend upon the method by which it is loaded into