1、调试时,执行到 for i, data_batch in enumerate(data_loader):时,第一次ok,第二次卡主了。网上给出的解决方法是将加载器DataLoader参数num_workers设为1
batch_size = num_gpus * batch_size num_workers = num_gpus * workers_per_gpu # TODO change pin_memory data_loader = DataLoader( dataset, batch_size=batch_size, sampler=sampler, shuffle=(sampler is None), num_workers=num_workers, collate_fn=collate_kitti, # pin_memory=True, pin_memory=False, )