/*
* A simple example for the use of PAPI, using PAPI_ipc
* -Kevin London
*/
#include <stdio.h>
#include <stdlib.h>
#include "papi.h"
#include "papi_test.h"
#define INDEX 500
int
main( int argc, char **argv )
{
extern void dummy( void * );
float matrixa[INDEX][INDEX], matrixb[INDEX][INDEX], mresult[INDEX][INDEX];
float real_time, proc_time, ipc;
long long ins;
int retval;
int i, j, k;
int quiet;
/* Set TESTS_QUIET variable */
quiet=tests_quiet( argc, argv );
/* Initialize the Matrix arrays */
for( i = 0; i < INDEX; i++ ) {
for( j= 0; j < INDEX; j++ ) {
mresult[i][j] = 0.0;
matrixa[i][j] = matrixb[i][j] = ( float ) rand( ) * ( float ) 1.1;
}
}
/* Setup PAPI library and begin collecting data from the counters */
retval = PAPI_ipc( &real_time, &proc_time, &ins, &ipc );
if (retval < PAPI_OK ) {
if (!quiet) printf("Trouble starting IPC\n");
test_skip( __FILE__, __LINE__, "PAPI_ipc", retval );
}
/* Matrix-Matrix multiply */
for ( i = 0; i < INDEX; i++ )
for ( j = 0; j < INDEX; j++ )
for ( k = 0; k < INDEX; k++ )
mresult[i][j] = mresult[i][j] + matrixa[i][k] * matrixb[k][j];
/* Collect the data into the variables passed in */
if ( ( retval = PAPI_ipc( &real_time, &proc_time, &ins, &ipc ) ) < PAPI_OK )
test_fail( __FILE__, __LINE__, "PAPI_ipc", retval );
dummy( ( void * ) mresult );
if ( !quiet ) {
printf( "Real_time: %f Proc_time: %f Total ins: ", real_time,
proc_time );
printf( LLDFMT, ins );
printf( " IPC: %f\n", ipc );
}
/* This should not happen unless the optimizer */
/* gets too good */
if (ins < INDEX*INDEX) {
test_fail( __FILE__, __LINE__, "Instruction count too low.",
5 );
}
/* Something is broken, or else you have a really */
/* slow processor */
if (ipc<0.01 ) {
test_fail( __FILE__, __LINE__, "IPC equals zero.",
5 );
}
test_pass( __FILE__ );
return 0;
}