Tutorial: C + MySQL + MPI

--D. Thiebaut (talk) 16:30, 13 October 2013 (EDT)

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References

• http://www.cyberciti.biz/tips/linux-unix-connect-mysql-c-api-program.html

Verify that MPI works

• test your installation with the classic hello world program.

Source

// mpi_hello.c

#include <mpi.h>
#include <stdio.h>
 
int main (int argc, char* argv[])
{
  int rank, size;
 
  MPI_Init (&argc, &argv);      /* starts MPI */
  MPI_Comm_rank (MPI_COMM_WORLD, &rank);        /* get current process id */
  MPI_Comm_size (MPI_COMM_WORLD, &size);        /* get number of processes */
  printf( "Hello world from process %d of %d\n", rank, size );
  MPI_Finalize();
  return 0;
}

Compile & Run

mpicc -o hello mpi_hello.c
mpirun -np 2 ./hello
Hello world from process 0 of 2
Hello world from process 1 of 2