[ROCm] Update meta_registration for efficient attention (#146979) #2050
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Fixes a series of failing and skipped unit tests.
For nvidia hw, the longsumexp last dimension is required to be a multiple of 32. This is not the case for rocm.
A related issue: pytorch#146848
The unit tests in question:
Pull Request resolved: pytorch#146979
Approved by: https://github.com/shunting314
Fixes #SWDEV-528386