pytorch

056d6247 - [MPS] Use Metal Events to synchronize buffers in MPSAllocator (Part 1) (#106938)

[MPS] Use Metal Events to synchronize buffers in MPSAllocator (Part 1) (#106938) - This PR is the first part of a bigger change to use `MPSEvent` to synchronize shared-buffers between CPU/GPU. - Add APIs to record and wait for `MPSEvents` in `MPSAllocator`. - Use a container list for Buffer Pools to simplify iterating over them. Pull Request resolved: https://github.com/pytorch/pytorch/pull/106938 Approved by: https://github.com/kulinseth