Another question about MPI_INIT_THREAD.
At the moment, as said, my OpenMPi version supports only level 0: MPI_THREAD_SINGLE. Suppose that i have this code:
#pragma omp barrier
#pragma omp master
MPI_Send(buf,...);
#pragma omp barrier
Due my OpenMPI configuration, is it dangerous use this type of code? What does it means that OpenMPI doesn't support all thread levels of MPI_INIT_THREAD?
2008/9/29 Gabriele Fatigati <
g.fatigati@cineca.it>
Dear OpenMPi developers,
i've noted that OpenMPI 1.25 and 1.2.6 version doesn't supports thread initialization function shows below:
int MPI_Init_thread(int *argc, char *((*argv)[]), int required, int *provided)
used in hybrid programming MPI+OpenMP. Returned vales provided is 0, so the unique thread level supported is MPI_THREAD_SINGLE.
Whitch is the newest OpenMPI version that has full support for MPI_THREAD_SINGLE, MPI_THREAD_FUNNELED, MPI_THREAD_SERIALIZED and MPI_THREAD_MULTIPLE?
Thanks in advance.
--
Ing. Gabriele Fatigati
CINECA Systems & Tecnologies Department
Supercomputing Group
Via Magnanelli 6/3, Casalecchio di Reno (BO) Italy
www.cineca.it Tel: +39 051 6171722
g.fatigati@cineca.it
--
Ing. Gabriele Fatigati
CINECA Systems & Tecnologies Department
Supercomputing Group
Via Magnanelli 6/3, Casalecchio di Reno (BO) Italy
www.cineca.it Tel: +39 051 6171722
g.fatigati@cineca.it