untitled

#include <mpi.h>
#include <stdio.h>

int main(int argc, char *argv[]) {
    int rank, size;
    int number;

    MPI_Init(&argc, &argv);

    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
    MPI_Comm_size(MPI_COMM_WORLD, &size);

    if (size < 2) {
        if (rank == 0)
            printf("Please run with at least 2 processes.\n");

        MPI_Finalize();
        return 0;
    }

    if (rank == 0) {
        number = 100;

        printf("Process %d sending number %d to process 1\n",
               rank, number);

        MPI_Send(&number, 1, MPI_INT, 1, 0, MPI_COMM_WORLD);
    }
    else if (rank == 1) {
        MPI_Recv(&number, 1, MPI_INT, 0, 0,
                 MPI_COMM_WORLD, MPI_STATUS_IGNORE);

        printf("Process %d received number %d from process 0\n",
               rank, number);
    }

    MPI_Finalize();
    return 0;
}




3


#include <stdio.h>
#include <omp.h>

int fib(int n) {
    int x, y;

    if (n < 2)
        return n;

    #pragma omp task shared(x)
    x = fib(n - 1);

    #pragma omp task shared(y)
    y = fib(n - 2);

    #pragma omp taskwait

    return x + y;
}

int main() {
    int n;

    printf("Enter number of Fibonacci terms: ");
    scanf("%d", &n);

    printf("Fibonacci Series:\n");

    for (int i = 0; i < n; i++) {
        int result;

        #pragma omp parallel
        {
            #pragma omp single
            {
                result = fib(i);
            }
        }

        printf("%d ", result);
    }

    printf("\n");
    return 0;
}