Hi all, i write a simple code to teste MPI and Threads, but it don't work and i don't have any ideia why. I
think that my problem is the installation. Regular thread programs work. MPI programs without threads work to.
I'm using LAM/MPI 7.1.1
gcc 3.2.2
Linux Red Hat e kernel 2.4.29
on a Intel PC cluster
My installation:
./configure --with-boot=rsh --with-rsh=ssh
make
make install
mpicc -showme
gcc -I/opt/lam-7.1.1/include -pthread -ldl -lpthread -L/lib -L/opt/lam-7.1.1/lib
-llammpio -llamf77mpi -lmpi -llam -laio -laio -lutil -lcr -ldl
mpicc mpi_helo_thread.c -o helo_thread
no error or warning reported
My output is:
Master call...
Slave 1.
And stop! I need kill program CTRL+C.
Any suggestion is welcome.
Tank you.
Foguer
My source.
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <mpi.h>
void * Hello (void * arg) {
printf("Hello!\n");
return 0;
}
int main (int argc, char ** argv) {
int MPI_provided;
int my_rank;
pthread_t pt;
MPI_Init_thread (NULL, NULL, MPI_THREAD_MULTIPLE, &MPI_provided);
MPI_Comm_rank (MPI_COMM_WORLD, &my_rank);
if (my_rank == 0) {
printf("Master call...\n");
}
else {
printf("Slave %d.\n", my_rank);
pthread_create(&pt, NULL, Hello, NULL);
pthread_join(pt, NULL);
fprintf(stderr, "Joined.\n");
}
MPI_Barrier(MPI_COMM_WORLD);
MPI_Finalize();
return 0;
}
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