在PyTorch中,可以使用torch.utils.data.DataLoader类来加载数据。DataLoader可以从各种数据源中加载数据,包括txt文件。prefetch_factor参数用于指定预取的因子,它决定了在每个迭代中预取多少个批次的数据。 下面是一个使用带有prefetch_factor的DataLoader从txt加载数据的示例代码: 代码语言:txt 复制 import torch from to...
场景一:你在创建 DataLoader 实例时,错误地将 num_workers 设置为 0,同时指定了 prefetch_factor。 场景二:在修改现有代码时,可能不小心改变了 num_workers 的值,而忘记了相应的 prefetch_factor 设置。 3. 解决该错误的方法或建议 确保num_workers 大于0:如果你需要使用 prefetch_factor,确保 num_workers 参数设...
📚 Documentation While constructing a DataLoader with num_workers=0, it is currently enforced that prefetch_factor can only be set to the default value (which is 2). I am not too sure why and whether this should be expected behavior, for ...
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