pip install autocuda
from autocuda import auto_cuda_info, auto_cuda_index, auto_cuda, auto_cuda_name
cuda_info_dict = auto_cuda_info()
cuda_device_index = auto_cuda_index() # return cuda index having largest free memory. return 'cpu' if not cuda
# os.environ['CUDA_VISIBLE_DEVICES'] = [str(cuda_device_index)]
cuda_device = auto_cuda()
# model.to(cuda_device) # assume you have inited your pytorch model
cuda_device_name = auto_cuda_name()
print('Choosing cuda device: {}'.format(cuda_device_name))
This package is based on https://github.com/QuantumLiu/tf_gpu_manager with MIT license