sci-libs/atlas-3.9.67 threads dev-cpp/eigen-3.0.5 -O3 sci-libs/openblas-0.1_alpha2 NEHALEM -O3 -O3 -openmp -threads sci-libs/openblas-0.1_alpha2 NEHALEM -O3 -O3 threads 8 sci-libs/mkl-10.3.7.256 mkl32* *int64* *openmp