title: multithreaded blas in python/numpy
body: <p>I am trying to implement a large number of matrix-matrix multiplications in Python. Initially, I assumed that NumPy would use automatically my threaded BLAS libraries since I built it against those libraries. However, when I look at <a href="http://en.wikipedia.org/wiki/Top_%28software%29" rel="noreferrer"><strong>top</strong></a> or something else it seems like the code does not use threading at all.</p>
  
  <p>Any ideas what is wrong or what I can do to easily use BLAS performance?</p>