fl_model.py: gpu_num variable is not instantiated

[saigontrade88]

Hello,

Thank you for providing the framework for research.

I found that in the file fl_model.py, function get_gpu_config_auto, gpu_num variable is not instantiated. It might cause an error if a user wants to load the GPUs automatically.

[Yi-Zoey]

Hi @saigontrade88 can you provide the python and TensorFlow or PyTorch version you are using when encountering this issue? We have this tutorial for more details about configuring GPUs.