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