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ClusterEnvironment

class pytorch_lightning.plugins.environments.ClusterEnvironment[source]

Bases: abc.ABC

Specification of a cluster environment.

abstract static detect()[source]

Detects the environment settings corresponding to this cluster and returns True if they match.

Return type

bool

abstract global_rank()[source]

The rank (index) of the currently running process across all nodes and devices.

Return type

int

abstract local_rank()[source]

The rank (index) of the currently running process inside of the current node.

Return type

int

abstract node_rank()[source]

The rank (index) of the node on which the current process runs.

Return type

int

teardown()[source]

Clean up any state set after execution finishes.

Return type

None

abstract world_size()[source]

The number of processes across all devices and nodes.

Return type

int

abstract property creates_processes_externally: bool

Whether the environment creates the subprocesses or not.

Return type

bool

abstract property main_address: str

The main address through which all processes connect and communicate.

Return type

str

abstract property main_port: int

An open and configured port in the main node through which all processes communicate.

Return type

int

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