yolo v3 fatal : Memory allocation failure

torch版的 yolov3报错：

fatal   : Memory allocation failure

parser.add_argument('--n_cpu', type=int, default=8, help='number of cpu threads to use during batch generation')      

dataloader = DataLoader(ImageFolder('data/samples', img_size=opt.img_size),
                        batch_size=opt.batch_size, shuffle=False, num_workers=opt.n_cpu)      

原因：n_cpu太多，内存不够了

解决方法：

把n_cpu调低就好了