example.c

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/*
    Copyright (C) 2008-2010 Robert Higgins
        Author: Robert Higgins <robert.higgins@ucd.ie>

    This file is part of PMM.

    PMM is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    PMM is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with PMM.  If not, see <http://www.gnu.org/licenses/>.
*/



/*
 * This file serves as a template to illustrate how a routine is to be called
 * inside a compiled program for use with the Performance Model Manager
 *
 * Program accepts one integer 'problem_size' as a parameter, no more no less.
 * This integer must be used to assign data and ultimately computations of a
 * proportional volume.
 *
 * In terms of Smart/Grid/Net-Solve, the integer relates to the complexity
 * of the routine. This program should determine the parameters with which
 * to call the routine using this integer.
 */


#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include "pmm_util.h"

#define NARGS 1

int main(int argc, char **argv) {
    long long complexity;

    /* declare variables */
    double a;
    double b;
    double c;
    double i;

    /* parse arguments */
    if(argc != NARGS+1) {
        return PMM_EXIT_ARGFAIL;
    }
    if(sscanf(argv[1], "%lf", &i) == 0) {
        return PMM_EXIT_ARGPARSEFAIL;
    }

    /* calculate complexity */
    complexity = 2*(long long)i;

    /* initialise data */
    a = M_PI;
    b = M_E;

    /* initialise timer */
    pmm_timer_init(complexity);

    /* start timer */
    pmm_timer_start();

    /* execute routine */
    while(i>0.0) {
        c = a * b;
        i = i - 1.0;
    }

    /* stop timer */
    pmm_timer_stop();

    /* get timing result */
    pmm_timer_result();

    /* destroy timer */
    pmm_timer_destroy();

    return PMM_EXIT_SUCCESS;
}