pytorch

81a4aeab - [Dynamo] Support Tensor.nelement & torch.cuda.is_available (#89164)

[Dynamo] Support Tensor.nelement & torch.cuda.is_available (#89164) Fix several errors in [7k github models](https://github.com/pytorch/torchdynamo/issues/1198). Pull Request resolved: https://github.com/pytorch/pytorch/pull/89164 Approved by: https://github.com/soumith