int main(int argc, char * argv[])
{
struct timeval start, end; //struct used to compute execution time
/* setup */
int rows, columns;
if (argc != 2) printf("please provide a user matrix!");
gettimeofday(&start, NULL);
double **A = read_user_matrix_from_file(argv[1], &rows, &columns);
double *cp = malloc(columns * sizeof(double)); // clicking probabilities
/* computation */
RREF(A, rows, columns);
divide_by_max(A, rows, columns);
/* results */
input_clicking_probabilities(A, rows, columns, cp);
print_best_acceptance_threshold(cp, rows);
write_clicking_probabilities_to_file(cp, rows);
free_matrix(A, rows);
free(cp);
gettimeofday(&end, NULL);
printf("\n\nAlgorithm's computational part duration :%ld\n", \
((end.tv_sec * 1000000 + end.tv_usec) - (start.tv_sec * 1000000 + start.tv_usec)));
return 0;
}
int main(int argc, char * argv[])
{
if (argc != 2) {printf("Please provide a matrix");}
int ierr = MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank); //sets rank
MPI_Comm_size(MPI_COMM_WORLD, &size); //gets number of processes
current_pivot = 0;
if (rank == 0) { //master process
get_number_of_rows(argv[1], &numrows);
numcols = numrows + 1; //specified by assignment
int i;
for (i = 1; i < size; i++) { //sending out information to slaves about what rows they are reading.
MPI_Isend(&numrows, 1, MPI_INT, i, MASTER_TO_SLAVE_TAG, MPI_COMM_WORLD, &request);
}
}
else {
MPI_Recv(&numrows, 1, MPI_INT, 0, MASTER_TO_SLAVE_TAG, MPI_COMM_WORLD, &status);
numcols = numrows + 1;
}
if (rank >= numrows) {
ierr = MPI_Finalize();
return 0;
} else if (rank < (numrows % size)) {
numrows = (numrows / size) + 1;
} else {
numrows = (numrows / size);
}
matrix = allocate_matrix(numrows, numcols);
read_rows(argv[1], matrix);
RREF(matrix);
absolute(matrix, &numrows, &numcols);
reduction(matrix, &numrows, &numcols);
get_best_threshold();
collect(matrix);
// print_matrix(matrix, numrows, numcols);
print_matrix(final_matrix, numcols - 1, numcols);
if (rank == 0) {
// output_to_file(final_matrix);
}
free_matrix(matrix, &numrows);
ierr = MPI_Finalize();
}