hi all;
i have this code snippet, it gives me errors that i really cant explain:
int main (int argc, char *argv[])
{
MPI_Request * req;
int my_rank;
char tmp = 'a';
MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &my_rank);
if(my_rank==0)
{
req = malloc(2 * sizeof(MPI_Request));
MPI_Irecv(&tmp, 1, MPI_CHAR, 0, 3, MPI_COMM_WORLD, &req[0]);
MPI_Isend(&tmp, 1, MPI_CHAR, 0, 3, MPI_COMM_WORLD, &req[1]);
MPI_Waitall(2, req, MPI_STATUSES_IGNORE);
MPI_Request_free(&req[0]);
MPI_Request_free(&req[1]);
free((char*)req);
}
return 0;
}
here is the error
MPI_Request_free: invalid request handle (rank 0, MPI_COMM_WORLD)
Rank (0, MPI_COMM_WORLD): Call stack within LAM:
Rank (0, MPI_COMM_WORLD): - MPI_Request_free()
Rank (0, MPI_COMM_WORLD): - main()
can someone explain this, how to fix this
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Ahmad Faraj Office: 170 James Lov Building
Ph.D Candidate Phone: (850)644-1533
Department of Computer Science Fax: (850)644-0058
Florida State University Email: faraj_at_[hidden]
Tallahassee, FL 32306 URL: http://www.cs.fsu.edu/~faraj
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