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PORunning Scipy on Heroku
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  1. PORunning Scipy on Heroku
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    copied!<p>I got Numpy and Matplotlib running on Heroku, and I'm trying to install Scipy as well. However, Scipy requires BLAS[1] to install, which is not presented on the Heroku platform. After contacting Heroku support, they suggested me to build BLAS as a static library to deploy, and setup the necessary environment variables.</p> <p>So, I compiled libblas.a on a 64bit Linux box, and set the following variables as described in [2] :</p> <pre><code>$ heroku config BLAS =&gt; .heroku/vendor/lib/libfblas.a LD_LIBRARY_PATH =&gt; .heroku/vendor/lib LIBRARY_PATH =&gt; .heroku/vendor/lib PATH =&gt; bin:/usr/local/bin:/usr/bin:/bin PYTHONUNBUFFERED =&gt; true </code></pre> <p>After adding scipy==0.10.1 in my requirements.txt, the push still fails. </p> <pre><code> File "scipy/integrate/setup.py", line 10, in configuration blas_opt = get_info('blas_opt',notfound_action=2) File "/tmp/build_h5l5y31i49e8/lib/python2.7/site-packages/numpy/distutils/system_info.py", line 311, in get_info return cl().get_info(notfound_action) File "/tmp/build_h5l5y31i49e8/lib/python2.7/site-packages/numpy/distutils/system_info.py", line 462, in get_info raise self.notfounderror(self.notfounderror.__doc__) numpy.distutils.system_info.BlasNotFoundError: Blas (http://www.netlib.org/blas/) libraries not found. Directories to search for the libraries can be specified in the numpy/distutils/site.cfg file (section [blas]) or by setting the BLAS environment variable. </code></pre> <p>It seem that pip is not aware of the BLAS environment variable, so I check the environment using heroku run python: </p> <pre><code>(venv)bash-3.2$ heroku run python Running python attached to terminal... import up, run.1 Python 2.7.2 (default, Oct 31 2011, 16:22:04) [GCC 4.4.3] on linux2 Type "help", "copyright", "credits" or "license" for more information. &gt;&gt;&gt; import os &gt;&gt;&gt; os.system('bash') ~ $ echo $BLAS .heroku/vendor/lib/libfblas.a ~ $ ls .heroku/vendor/lib/libfblas.a .heroku/vendor/lib/libfblas.a ~ $ </code></pre> <p>And it seems fine. Now I have no idea how to solve this.</p> <p>[1] <a href="http://www.netlib.org/blas/">http://www.netlib.org/blas/</a> [2] <a href="http://www.scipy.org/Installing_SciPy/Linux">http://www.scipy.org/Installing_SciPy/Linux</a></p>
 

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