Question

Q4. (a) Consider the following MPI code. Does it compile and run correctly? Correct the code if necessary. Explain what the two functions MPI_Comm_rank and MPI_Comm_size do. #include "mpi.h" #include <stdio.h> int main(int argc, char *argv[]) { int rank, size; MPI_Comm_rank(MPI_COMM_WORLD, &rank ); MPI_Comm_size(MPI_COMM_WORLD, &size); printf( "I am %d of %d\n", rank, size); MPI_Finalize(); return 0; } (b) (5) Explain the difference between blocking and non-blocking communication. Explain clearly the two functions in MPI for blocking communication and the parameters they require. (5)

          Q4.
(a)
Consider the following MPI code. Does it compile and run correctly? Correct
the code if necessary. Explain what the two functions MPI_Comm_rank and
MPI_Comm_size do.
#include "mpi.h"
#include <stdio.h>
int main(int argc, char *argv[])
{
int rank, size;
MPI_Comm_rank(MPI_COMM_WORLD, &rank );
MPI_Comm_size(MPI_COMM_WORLD, &size);
printf( "I am %d of %d\n", rank, size);
MPI_Finalize();
return 0;
}
(b)
(5)
Explain the difference between blocking and non-blocking communication.
Explain clearly the two functions in MPI for blocking communication and
the parameters they require.
(5)

$Q4. (a) Consider the following MPI code. Does it compile and run correctly? Correct the code if necessary. Explain what the two functions MPICommrank and MPICommsize do. #include "mpi.h" #include <stdio.h> int main(int argc, char *argv[]) int rank, size; MPICommrank(MPICOMMWORLD, rank ); MPICommsize(MPICOMMWORLD, size); printf( "I am %d of %d\n", rank, size); MPIFinalize(); return 0; (b) (5) Explain the difference between blocking and non-blocking communication. Explain clearly the two functions in MPI for blocking communication and the parameters they require. (5)$

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