CUDA 11.0 support (#85)

Summary:
Pull Request resolved: #85

fixes #82

Test Plan: Imported from OSS

Reviewed By: seemethere

Differential Revision: D25160729

Pulled By: pbelevich

fbshipit-source-id: 35500fc3e448268500ab92965d29f822b8fcd5ee

Author: pbelevich