Dear OpenMPI developers, I've noted that OpenMPI has an asynchronous behaviour in the collective calls. The processors, doesn't wait that other procs arrives in the call. This behaviour sometimes can cause some problems with a lot of processors in the jobs.
Is there an OpenMPI parameter to lock all process in the collective call until is finished? Otherwise i have to insert many MPI_Barrier in my code and it is very tedious and strange.. Thanks in advance. -- Ing. Gabriele Fatigati Parallel programmer CINECA Systems & Tecnologies Department Supercomputing Group Via Magnanelli 6/3, Casalecchio di Reno (BO) Italy www.cineca.it Tel: +39 051 6171722 g.fatigati [AT] cineca.it
