vecacc-time.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/time.h>
#include <time.h>
#include "tools.h"

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Macros
#define	xmalloc(p)
#define	vmalloc(p)

Functions
void	vecacc (int n, float *src1, float *src2, float *result)
int	main (int argc, char **argv)

Macro Definition Documentation

vmalloc

#define vmalloc

(

p

)

Value:

        do {                                                            \
                p=(float*)malloc(n*sizeof(float));\
        } while(0);

xmalloc

#define xmalloc

(

p

)

Value:

        do {                                                            \
                if (posix_memalign((void **) &p, 32, n * sizeof(float))) \
                        return 3;                                       \
        } while(0);

Function Documentation

main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 17 of file vecacc-time.c.

{
        int n;
        float *src1, *src2, *result;
        n = atoi(argv[1]);
 
#define xmalloc(p)                                                      \
        do {                                                            \
                if (posix_memalign((void **) &p, 32, n * sizeof(float))) \
                        return 3;                                       \
        } while(0);
 
#define vmalloc(p)\
        do {                                                            \
                p=(float*)malloc(n*sizeof(float));\
        } while(0);
 
        vmalloc(src1);
        vmalloc(src2);
        vmalloc(result);
 
        init_data_file(argv[2]);
        init_data_float(src1, n);
        init_data_float(src2, n);
        close_data_file();
 
        //struct timeval start,end;
        //gettimeofday(&start, NULL);
        struct timespec start,end;
        clock_gettime(CLOCK_MONOTONIC, &start);
        vecacc(n, src1, src2, result);
        clock_gettime(CLOCK_MONOTONIC, &end);
        double tdiff = end.tv_sec*1000.0+(end.tv_nsec/1000000.0) - (start.tv_sec*1000.0+(start.tv_nsec/1000000.0));
        printf("Time: %f\n", tdiff);
 
        free(src1);
        free(src2);
        free(result);
 
        return 0;
}

References close_data_file(), end, free(), init_data_file(), init_data_float(), printf(), start, vecacc(), and vmalloc.

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vecacc()

void vecacc	(	int	n,
		float *	src1,
		float *	src2,
		float *	result
	)

pragma vector aligned pragma ivdep

Definition at line 8 of file vecacc-time.c.

{
    int i;
/*#pragma vector aligned
#pragma ivdep*/
    for(i=0;i<n;i++)
        result[i]+=src1[i]*src2[i];
}

Referenced by main().

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