XLAEnvironment
- class lightning.pytorch.plugins.environments.XLAEnvironment(*args, **kwargs)
Bases:
ClusterEnvironmentCluster environment for training on a TPU Pod with the PyTorch/XLA library.
A list of environment variables set by XLA can be found here.
- static detect()
Detects the environment settings corresponding to this cluster and returns
Trueif they match.- Return type:
- global_rank()
The rank (index) of the currently running process across all host and devices.
The output is cached for performance.
- Return type:
- local_rank()
The rank (index) of the currently running process inside of the current host.
The output is cached for performance.
- Return type:
- node_rank()
The rank (index) of the host on which the current process runs.
The output is cached for performance.
- Return type:
- world_size()
The number of processes across all devices and hosts.
The output is cached for performance.
- Return type:
- property creates_processes_externally: bool
Whether the environment creates the subprocesses or not.
- property main_address: str
The main address through which all processes connect and communicate.
- property main_port: int
An open and configured port in the main node through which all processes communicate.
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