On Sep 15, 2023, at 11:07 AM, Raffenetti, Ken via discuss <discuss@mpich.org> wrote:

1. Is there a way to detect this kind of overload with an MPI call?

If MPI detects an error at runtime, the default behavior is to abort the application. If you application does not abort (and you haven't changed the default error handler), then no error was detected by MPI.