Fix bench w/ iobinding; Remove cpu fallback (#113703)
Summary:
Summary
- `TORCH_TO_NUMPY_DTYPE` was misplaced previously hence subclasses cannot access it.
- Remove cpu fallback when benching onnx with gpu, expose gpu run failures properly.
X-link: https://github.com/pytorch/pytorch/pull/113703
Approved by: https://github.com/thiagocrepaldi
ghstack dependencies: #113404, #113697
Reviewed By: huydhn
Differential Revision: D51444513
fbshipit-source-id: b934f438290ccdd8b443aa9b103b2b9e4dddf29d