Requirements for installing Numpy
- c compiler (gcc)
- fortran compiler (gfortran)
- python header files (2.4.x - 3.2.x)
- Strongly recommended BLAS or LAPACK
I wrote a script to install virtualenv and scikit-learn along with all the dependencies. You can follow up to the numpy install, which is pretty straight forward. I copied the relevant code below.
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
Just copy/paste, hit enter, (get a cup of coffee) and you're ready to go with virtualenv and numpy on EC2.
If you want to verify that numpy found the optimized linear algebra libraries, run:
(sk-learn)[ec2-user@ip-10-99-17-223 ~]$ python -c "import numpy; numpy.show_config()"
if you see something similar to the following you're all set.
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
For a more detailed explanation, you can read installing-scikit-learn-on-amazon-ec2. I wrote the blog post specifically to remember the installation steps and have a short how-to guide. I try to keep the post and the install script up to date.
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