M1/M2 performance fix: use Apple MPS (metal performance shaders) if available#26

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sghael wants to merge 2 commits intokarpathy:masterfrom sghael:mps-if-available

+6-2

Commits on Jul 17, 2023

use apple mps (metal performance shaders) to move work to M1 GPU when available
sghael
committed

Commits on Jul 18, 2023

Modify the code to work with PyTorch versions prior to 1.2
sghael
committed