You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
1.4 KiB
63 lines
1.4 KiB
#define _GNU_SOURCE
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <sched.h>
|
|
#include <arm_neon.h>
|
|
#include <sys/prctl.h>
|
|
#include <sys/syscall.h>
|
|
#include "../../../common/util.h"
|
|
#include "../../../common/timing.h"
|
|
|
|
#define CORES 3
|
|
double ttime[CORES];
|
|
double oout[CORES];
|
|
|
|
void waste(int core) {
|
|
prctl(PR_SET_NAME, (unsigned long)"waste", 0, 0, 0);
|
|
|
|
cpu_set_t my_set;
|
|
CPU_ZERO(&my_set);
|
|
CPU_SET(core, &my_set);
|
|
int ret = sched_setaffinity(0, sizeof(cpu_set_t), &my_set);
|
|
printf("set affinity to %d: %d\n", core, ret);
|
|
|
|
//struct sched_param sa;
|
|
//memset(&sa, 0, sizeof(sa));
|
|
//sa.sched_priority = 51;
|
|
//sched_setscheduler(syscall(SYS_gettid), SCHED_FIFO, &sa);
|
|
|
|
float32x4_t *tmp = (float32x4_t *)malloc(0x1000008*sizeof(float32x4_t));
|
|
float32x4_t out;
|
|
|
|
uint64_t i = 0;
|
|
double sec = seconds_since_boot();
|
|
while(1) {
|
|
int j;
|
|
for (j = 0; j < 0x1000000; j++) {
|
|
out = vmlaq_f32(out, tmp[j], tmp[j+1]);
|
|
}
|
|
if (i == 0x8) {
|
|
double nsec = seconds_since_boot();
|
|
ttime[core] = nsec-sec;
|
|
oout[core] = out[0] + out[1] + out[2] + out[3];
|
|
i = 0;
|
|
sec = nsec;
|
|
}
|
|
i++;
|
|
}
|
|
}
|
|
|
|
int main() {
|
|
pthread_t waster[CORES];
|
|
for (int i = 0 ; i < CORES; i++) {
|
|
pthread_create(&waster[i], NULL, waste, (void*)i);
|
|
}
|
|
while (1) {
|
|
for (int i = 0 ; i < CORES; i++) {
|
|
printf("%.2f ", ttime[i]);
|
|
}
|
|
printf("\n");
|
|
sleep(1);
|
|
}
|
|
}
|
|
|
|
|