title: numpy.linalg.linalg.LinAlgError: SVD did not converge
body: <p>Here are my numpy arrays:</p>
  
  <pre><code>z 
  [[  3.90311860e-322   1.83939721e-001]
   [  0.00000000e+000   1.83939721e-001]
   [  0.00000000e+000   9.96473555e-001]
   [  0.00000000e+000   1.83939721e-001]
   [  0.00000000e+000   1.03585447e+000]
   [  0.00000000e+000   1.83939721e-001]
   [  0.00000000e+000   1.83939721e-001]
   [  0.00000000e+000   9.41400244e-001]
   [  0.00000000e+000   1.01817846e+000]
   [  0.00000000e+000   1.83939721e-001]]
  weights
  [[ -1.76457791 -24.11966074]
   [ -2.69231436 -24.11966074]
   [-24.11966074  -2.0106293 ]
   [ -1.99135789 -24.11966074]
   [-24.11966074  -1.89735781]
   [ -2.01441034 -24.11966074]
   [ -2.37736986 -24.11966074]
   [-24.11966074  -2.19061707]
   [-24.11966074  -1.94675704]
   [ -1.5983523  -24.11966074]]
  X
  [[   0.     2.5  100. ]
   [   2.     5.    80. ]
   [  31.    50.   -11. ]
   [  -0.5    2.    90. ]
   [  30.    45.5  -11. ]
   [   1.5    2.5  101. ]
   [   1.2    4.    85. ]
   [  31.    52.   -10. ]
   [  30.    48.   -15. ]
   [   1.     2.5  113. ]]
  </code></pre>
  
  <p>When I do </p>
  
  <pre><code>import sys
  import numpy as np
  import statsmodels.api as sm
  
      for y1, w in zip(z.T, weights.T): # building the parameters per j class
          temp_g = sm.WLS(y1, X, w).fit()
  </code></pre>
  
  <p>I get the following error:</p>
  
  <pre><code>Traceback (most recent call last):
    File "C:\Users\app\Documents\Python Scripts\gentleboost_c.py", line 177, in &lt;module&gt;
      boost(X, y, 10, test3)
    File "C:\Users\app\Documents\Python Scripts\gentleboost_c.py", line 80, in boost
      temp_g = sm.WLS(y1, X, w).fit()  # Step 2(a)(ii)
    File "C:\Users\app\Anaconda\lib\site-packages\statsmodels\regression\linear_model.py", line 127, in fit
      self.pinv_wexog = pinv_wexog = np.linalg.pinv(self.wexog)
    File "C:\Users\app\Anaconda\lib\site-packages\numpy\linalg\linalg.py", line 1574, in pinv
      u, s, vt = svd(a, 0)
    File "C:\Users\app\Anaconda\lib\site-packages\numpy\linalg\linalg.py", line 1323, in svd
      raise LinAlgError('SVD did not converge')
  numpy.linalg.linalg.LinAlgError: SVD did not converge
  </code></pre>
  
  <p>What's wrong?</p>