How to use multi CPU cores to train NNs using caffe and OpenBLAS

Question

I am learning deep learning recently and my friend recommended me caffe. After install it with OpenBLAS, I followed the tutorial, MNIST task in the doc. But later I found it was

Answer 1

I found that this method works:

When you build the caffe, in your make command, do use this for 8 cores: make all -j8 and make pycaffe -j8

Also, make sure OPENBLAS_NUM_THREADS=8 is set.

This question has a full script for the same.