CTC loss in Pytorch

Currently, what would be a proper way to use CTC loss in pytorch?
It seems to me “warp-ctc is out of maintain, and cudnn.ctc is 20x faster”

So how could we use cudnn CTC loss in pytorch? Thanks

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It’s baked in to 1.0!

torch.nn.CTC loss , is this available only from 1.0 ?