pytorch

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egienvalue d7e1bf9ff9 torch.mtia module for MTIA device backend (#123612 )

MTIA device has its own Module in PyTorch now.
torch.mtia has following APIs similar to other backends. The lazy_init is also supported.
```
__all__ = [
    "init",
    "is_available",
    "synchronize",
    "device_count",
    "current_device",
    "current_stream",
    "default_stream",
    "set_stream",
    "stream",
    "device",
]

```
------------
For device management. We expand AccleratorHooksInterface to support generic device management and it can be used in both C++ and PyThon.
```
def _accelerator_hooks_device_count() -> _int: ...
def _accelerator_hooks_set_current_device(device_index: _int) -> None: ...
def _accelerator_hooks_get_current_device() -> _int : ...
def _accelerator_hooks_exchange_device(device_index: _int) -> _int : ...
def _accelerator_hooks_maybe_exchange_device(device_index: _int) -> _int : ...
```

---------
Adding get_device_module API to retrieve device modules for different device types.
```
def get_device_module(device: Optional[Union[torch.device, str]] = None)
```
---------
@exported-using-ghexport

Differential Revision: [D52923602](https://our.internmc.facebook.com/intern/diff/D52923602/)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/123612
Approved by: https://github.com/albanD
ghstack dependencies: #123611

2024-04-18 17:38:06 +00:00