More aggressively market functorch.vmap when torch.vmap gets called (#67347)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/67347
This PR:
- changes the warning when torch.vmap gets called to suggest using
functorch.vmap
- changes the warning when a batching rule isn't implemented to suggest
using functorch.vmap
Test Plan: - test/test_vmap.py
Reviewed By: H-Huang
Differential Revision: D31966603
Pulled By: zou3519
fbshipit-source-id: b01dc1c2e298ce899b4a3a5fb333222a8d5bfb56
