torch.cuda.set_device — PyTorch 2.7 documentation (original) (raw)

torch.cuda.set_device(device)[source][source]¶

Set the current device.

Usage of this function is discouraged in favor of device. In most cases it’s better to use CUDA_VISIBLE_DEVICES environmental variable.

Parameters

device (torch.device or int) – selected device. This function is a no-op if this argument is negative.