HW3_CNN_CUDA_ERROR #90
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HW3_CNN训练部分交叉熵应该为
criterion = nn.CrossEntropyLoss(ignore_index=-1)
原因：交叉熵计算时，label范围为[0, n_classes-1]
否则会报错
RuntimeError: CUDA error: device-side assert triggered
CUDA kernel errors might be asynchronously reported at some other API call,so the stacktrace below might be incorrect.
For debugging consider passing CUDA_LAUNCH_BLOCKING=1.