authParallelAndDistributedSystemsCourseExercise4/openmp/serial_gs_pagerank.c

#include <sys/time.h>
#include <omp.h>
#include "serial_gs_pagerank_functions.h"
//#include "coo_sparse_matrix.h"

struct timeval startwtime, endwtime;
double seq_time;

int main(int argc, char **argv) {
	CsrSparseMatrix transitionMatrix = initCsrSparseMatrix();
	double *pagerankVector;
	bool convergenceStatus;
	Parameters parameters;
	omp_set_dynamic(0);
	parseArguments(argc, argv, &parameters);

	initialize(&transitionMatrix, &pagerankVector, &parameters);

	// Starts wall-clock timer
	gettimeofday (&startwtime, NULL);

	int iterations = pagerank(&transitionMatrix, &pagerankVector,
		&convergenceStatus, parameters);
	if (parameters.verbose) {
		printf(ANSI_COLOR_YELLOW "\n----- RESULTS -----\n" ANSI_COLOR_RESET);
		if (convergenceStatus) {
			printf(ANSI_COLOR_GREEN "Pagerank converged after %d iterations!\n" \
				ANSI_COLOR_RESET, iterations);
		} else {
			printf(ANSI_COLOR_RED "Pagerank did not converge after max number of" \
				" iterations (%d) was reached!\n" ANSI_COLOR_RESET, iterations);
		}
	}

	// Stops wall-clock timer
	gettimeofday (&endwtime, NULL);
	double seq_time = (double)((endwtime.tv_usec - startwtime.tv_usec)/1.0e6 +
		endwtime.tv_sec - startwtime.tv_sec);
	printf("%s wall clock time = %f\n","Pagerank (Gauss-Seidel method), serial implementation",
		seq_time);

	free(pagerankVector);
	destroyCsrSparseMatrix(&transitionMatrix);
}