BLAS - yszheda/wiki GitHub Wiki Caffe Issue: In CPU mode, using multi-core is much slower than using a single core #1539 OpenBLAS https://github.com/xianyi/OpenBLAS/wiki/faq Threaded OpenBlas benchmark slower than system blas? single-threaded version export OPENBLAS_NUM_THREADS=1 make USE_THREAD=0 # or make USE_OPENMP=1