sudo yum -y install gcc-c++ python27-devel atlas-sse3-devel lapack-devel wget https://pypi.python.org/packages/source/v/virtualenv/virtualenv-1.11.2.tar.gz tar xzf virtualenv-1.11.2.tar.gz python27 virtualenv-1.11.2/virtualenv.py sk-learn . sk-learn/bin/activate pip install numpy (sk-learn)[ec2-user@ip-10-99-17-223 ~]$ python -c "import numpy; numpy.show_config()" atlas_threads_info: libraries = ['lapack', 'ptf77blas', 'ptcblas', 'atlas'] library_dirs = ['/usr/lib64/atlas-sse3'] define_macros = [('ATLAS_INFO', '"\"3.8.4\""')] language = f77 include_dirs = ['/usr/include'] blas_opt_info: libraries = ['ptf77blas', 'ptcblas', 'atlas'] library_dirs = ['/usr/lib64/atlas-sse3'] define_macros = [('ATLAS_INFO', '"\"3.8.4\""')] language = c include_dirs = ['/usr/include'] atlas_blas_threads_info: libraries = ['ptf77blas', 'ptcblas', 'atlas'] library_dirs = ['/usr/lib64/atlas-sse3'] define_macros = [('ATLAS_INFO', '"\"3.8.4\""')] language = c include_dirs = ['/usr/include'] lapack_opt_info: libraries = ['lapack', 'ptf77blas', 'ptcblas', 'atlas'] library_dirs = ['/usr/lib64/atlas-sse3'] define_macros = [('ATLAS_INFO', '"\"3.8.4\""')] language = f77 include_dirs = ['/usr/include'] lapack_mkl_info: NOT AVAILABLE blas_mkl_info: NOT AVAILABLE mkl_info: NOT AVAILABLE