MATLAB: Hardware resources for training deep neural network

Hello,

I would like to perform training using multiple CPU, for each call of the function trainNetwork().

According to the documentation, I have specified in ExecutionEnvironment = 'parallel'; to use the local parallel pool.

However, during training, the current trace appears "Training on single CPU", which I suppose indicates that is using only one CPU.

Is it supported multiple CPU training? If so, do you have any suggestion on how to modify the parameters to support multiple CPU training?

Is there any conflict with parfor instruction?

Thanks in advance for your help.

All the best.