Re: [OMPI users] Limits of communicator size and number of parallel broadcast transmissions

2020-03-17 Thread George Bosilca via users
On Mon, Mar 16, 2020 at 6:15 PM Konstantinos Konstantinidis via users < users@lists.open-mpi.org> wrote: > Hi, I have some questions regarding technical details of MPI collective > communication methods and broadcast: > >- I want to understand when the number of receivers in a MPI_Bcast can >

[OMPI users] Limits of communicator size and number of parallel broadcast transmissions

2020-03-16 Thread Konstantinos Konstantinidis via users
Hi, I have some questions regarding technical details of MPI collective communication methods and broadcast: - I want to understand when the number of receivers in a MPI_Bcast can be a problem slowing down the broadcast. There are a few implementations of MPI_Bcast. Consider that of a bin