Re: [pypy-dev] Matrix dot product

[Matti Picus]

See issue 1630, we should be 1.5 times slower on the latest version (2.3.1) https://bitbucket.org/pypy/pypy/issue/1630 We do have plans for being faster, but it will take a while to get there. Note that your pre-allocation of c is not used by a.dot(b), you probably want to do a.dot(b, out=c), which does not actually save much time but seems to be more what you were trying to do. Matti On 11/06/2014 7:07 PM, Gayathri J wrote: Following is my python code for matrix multiplication import time a=random.rand(128,128,128,15) b=np.random.rand(15,15) c=np.zeros((128,128,128,15), dtype=np.float64) t=time.time() c=a.dot(b) print time.time()-t Timing for  pypy -> 3.957 python 2.7 -> .80 So find that the basic matrix dot operation is faster on python 2.7 than on pypy 2.2.1 why is this so? am i missing something? thanks gayathri _______________________________________________ pypy-dev mailing list pypy-dev@python.org https://mail.python.org/mailman/listinfo/pypy-dev

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