----- "Yuanyuan ZHANG" <zhang.yuanyuan_at_[hidden]> wrote:
> For an OpenMP/MPI hybrid program, if I only want to make MPI calls
> using the main thread, ie., only in between parallel sections, can I just
> use SINGLE or MPI_Init?
If your MPI calls is NOT within OpenMP directives, MPI does not even
know you are using threads. So calling MPI_Init is good enough.