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for loop speedup in grdients X

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James Hensman 2014-09-16 13:20:38 +01:00
parent ed754823be
commit ff63617286
1 changed files with 2 additions and 1 deletions
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GPy/kern/_src/stationary.py
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@ -171,7 +171,8 @@ class Stationary(Kern):
#the lower memory way with a loop #the lower memory way with a loop
ret = np.empty(X.shape, dtype=np.float64) ret = np.empty(X.shape, dtype=np.float64)
[np.sum(tmp*(X[:,q][:,None]-X2[:,q][None,:]), axis=1, out=ret[:,q]) for q in xrange(self.input_dim)] for q in xrange(self.input_dim):
np.sum(tmp*(X[:,q][:,None]-X2[:,q][None,:]), axis=1, out=ret[:,q])
ret /= self.lengthscale**2 ret /= self.lengthscale**2
return ret return ret