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/* This file attempts to test the floating point */
/* performance counter PAPI_FP_OPS */
/* by Vince Weaver, <vincent.weaver@maine.edu> */
/* Note! There are many many many things that can go wrong */
/* when trying to get a sane floating point measurement. */
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include "papi.h"
#include "papi_test.h"
#include "display_error.h"
#include "testcode.h"
int main(int argc, char **argv) {
int num_runs=100,i;
long long high=0,low=0,average=0,expected=1500000;
double error,double_result;
long long count,total=0;
int quiet=0,retval,ins_result;
int eventset=PAPI_NULL;
quiet=tests_quiet(argc,argv);
if (!quiet) {
printf("\nTesting the PAPI_FP_OPS event.\n\n");
}
/* Init the PAPI library */
retval = PAPI_library_init( PAPI_VER_CURRENT );
if ( retval != PAPI_VER_CURRENT ) {
test_fail( __FILE__, __LINE__, "PAPI_library_init", retval );
}
/* Create the eventset */
retval=PAPI_create_eventset(&eventset);
if (retval!=PAPI_OK) {
test_fail( __FILE__, __LINE__, "PAPI_create_eventset", retval );
}
/* Add FP_OPS event */
retval=PAPI_add_named_event(eventset,"PAPI_FP_OPS");
if (retval!=PAPI_OK) {
if (!quiet) fprintf(stderr,"PAPI_FP_OPS not available!\n");
test_skip( __FILE__, __LINE__, "adding PAPI_FP_OPS", retval );
}
/**************************************/
/* Test a loop with no floating point */
/**************************************/
total=0; high=0; low=0;
expected=0;
if (!quiet) {
printf("Testing a loop with %lld floating point (%d times):\n",
expected,num_runs);
}
for(i=0;i<num_runs;i++) {
PAPI_reset(eventset);
PAPI_start(eventset);
ins_result=branches_testcode();
retval=PAPI_stop(eventset,&count);
if (ins_result==CODE_UNIMPLEMENTED) {
fprintf(stderr,"\tCode unimplemented\n");
test_skip( __FILE__, __LINE__, "unimplemented", 0);
}
if (retval!=PAPI_OK) {
test_fail( __FILE__, __LINE__,
"reading PAPI_TOT_INS", retval );
}
if (count>high) high=count;
if ((low==0) || (count<low)) low=count;
total+=count;
}
average=(total/num_runs);
error=display_error(average,high,low,expected,quiet);
if (average>10) {
if (!quiet) printf("Unexpected FP event value\n");
test_fail( __FILE__, __LINE__, "Unexpected FP event", 1 );
}
if (!quiet) printf("\n");
/*******************************************/
/* Test a single-precision matrix multiply */
/*******************************************/
total=0; high=0; low=0;
expected=flops_float_init_matrix();
num_runs=3;
if (!quiet) {
printf("Testing a matrix multiply with %lld single-precision FP operations (%d times)\n",
expected,num_runs);
}
for(i=0;i<num_runs;i++) {
PAPI_reset(eventset);
PAPI_start(eventset);
double_result=flops_float_matrix_matrix_multiply();
retval=PAPI_stop(eventset,&count);
if (retval!=PAPI_OK) {
test_fail( __FILE__, __LINE__,
"reading PAPI_TOT_INS", retval );
}
if (count>high) high=count;
if ((low==0) || (count<low)) low=count;
total+=count;
}
if (!quiet) printf("Result %lf\n",double_result);
average=(total/num_runs);
error=display_error(average,high,low,expected,quiet);
if ((error > 1.0) || (error<-1.0)) {
if (!quiet) printf("Instruction count off by more than 1%%\n");
test_fail( __FILE__, __LINE__, "Error too high", 1 );
}
if (!quiet) printf("\n");
/*******************************************/
/* Test a double-precision matrix multiply */
/*******************************************/
total=0; high=0; low=0;
expected=flops_double_init_matrix();
num_runs=3;
if (!quiet) {
printf("Testing a matrix multiply with %lld double-precision FP operations (%d times)\n",
expected,num_runs);
}
for(i=0;i<num_runs;i++) {
PAPI_reset(eventset);
PAPI_start(eventset);
double_result=flops_double_matrix_matrix_multiply();
retval=PAPI_stop(eventset,&count);
if (retval!=PAPI_OK) {
test_fail( __FILE__, __LINE__,
"reading PAPI_TOT_INS", retval );
}
if (count>high) high=count;
if ((low==0) || (count<low)) low=count;
total+=count;
}
if (!quiet) printf("Result %lf\n",double_result);
average=(total/num_runs);
error=display_error(average,high,low,expected,quiet);
if ((error > 1.0) || (error<-1.0)) {
if (!quiet) printf("Instruction count off by more than 1%%\n");
test_fail( __FILE__, __LINE__, "Error too high", 1 );
}
if (!quiet) printf("\n");
test_pass( __FILE__ );
PAPI_shutdown();
return 0;
}
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