在测试sr x2任务时我将scale设置为2，PSNR结果是正确的
但我测试sr x3时，将scale 设置为3的时候出现了
RuntimeError: Error(s) in loading state_dict for ipt:
size mismatch for tail.0.0.0.weight: copying a param with shape torch.Size([256, 64, 3, 3]) from checkpoint, the shape in current model is torch.Size([576, 64, 3, 3]).
size mismatch for tail.0.0.0.bias: copying a param with shape torch.Size([256]) from checkpoint, the shape in current model is torch.Size([576]).
测试sr x4 时，将scale 设置为4，但是PSNR仅为12.448
在测试sr x2任务时我将scale设置为2，PSNR结果是正确的 但我测试sr x3时，将scale 设置为3的时候出现了 RuntimeError: Error(s) in loading state_dict for ipt: size mismatch for tail.0.0.0.weight: copying a param with shape torch.Size([256, 64, 3, 3]) from checkpoint, the shape in current model is torch.Size([576, 64, 3, 3]). size mismatch for tail.0.0.0.bias: copying a param with shape torch.Size([256]) from checkpoint, the shape in current model is torch.Size([576]). 测试sr x4 时，将scale 设置为4，但是PSNR仅为12.448
这是为什么呢