GPUAccelerator

class pytorch_lightning.accelerators.GPUAccelerator(precision_plugin, training_type_plugin)[source]

Bases: pytorch_lightning.accelerators.accelerator.Accelerator

Accelerator for GPU devices.

Parameters

• precision_plugin (PrecisionPlugin) – the plugin to handle precision-specific parts

• training_type_plugin (TrainingTypePlugin) – the plugin to handle different training routines

static auto_device_count()[source]

Get the devices when set to auto.

Return type

int

get_device_stats(device)[source]

Gets stats for the given GPU device.

Parameters

device (Union[str, device]) – GPU device for which to get stats

Return type

Dict[str, Any]

Returns

A dictionary mapping the metrics to their values.

Raises

FileNotFoundError – If nvidia-smi installation not found

on_train_start()[source]

Called when train begins.

Return type

None

setup(trainer)[source]

Setup plugins for the trainer fit and creates optimizers.

Parameters

trainer (Trainer) – the trainer instance

Return type

None

setup_environment()[source]

Raises

MisconfigurationException – If the selected device is not GPU.

Return type

None

teardown()[source]

This method is called to teardown the training process.

It is the right place to release memory and free other resources.

Return type

None