pytorch

c9714016 - [JIT] Disable conv-add-relu fusion for cuDNN7 when model uses fp16 (#56579)

[JIT] Disable conv-add-relu fusion for cuDNN7 when model uses fp16 (#56579) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/56579 On earlier cuDNN versions, when a model uses fp16, the performance after conv-add-relu fusion regresses. Let's just disable the fusion for fp16 if cuDNN version is older than v8. Test Plan: Tested for fp16 models on Nvidia Tesla T4 Reviewed By: ZolotukhinM Differential Revision: D27915514 Pulled By: desertfire fbshipit-source-id: 1c0081a80540c507e608216c90bc74c486c7008d