Consider the following helloworld.c MPI program IN C:

#include

#include "mpi.h"

int main(int argc, char* argv[])

{

int rank, size, len;

char version[MPI_MAX_LIBRARY_VERSION_STRING];

MPI_Init(&argc, &argv);

MPI_Comm_rank(MPI_COMM_WORLD, &rank);

MPI_Comm_size(MPI_COMM_WORLD, &size);

MPI_Get_library_version(version, &len);

printf("Hello world, I am %d of %d, (%s, %d) ",

rank, size, version, len);

MPI_Finalize();

return 0;

}

This program takes an integer n as a command line argument and prints for each process the following output: Hello world, I am process i of n processes, where i is the rank of the process, and n is the size.

Compile and run this MPI program and verify its output by following these steps:

• Open a new file in Notepad++ and copy the code above. Save your file with YourName_Prob1.c.
• In Cygwin, use emacs to create and save your program.
• In Cygwin, first compile your program by using the command: mpicc o Problem1 YourName_Prob1.c
• Then, run your MPI program by typing the command: mpirun np 4 Problem1
• Verify that your program gives the correct output

THANKS IN HELPING ME