jax.device_count¶

jax.device_count(backend=None)[source]¶

Returns the total number of devices.

On most platforms, this is the same as jax.local_device_count(). However, on multi-process platforms where different devices are associated with different processes, this will return the total number of devices across all processes.

Parameters: backend (Union[str, Client, None]) – This is an experimental feature and the API is likely to change. Optional, a string representing the xla backend: 'cpu', 'gpu', or 'tpu'.
Return type: int
Returns: Number of devices.