[Numpy-discussion] MemoryError with dot(A, A.T) where A is 800MB on 32-bit Vista

greg whittier gregwh@gmail....
Wed Jun 9 12:06:12 CDT 2010


On Wed, Jun 9, 2010 at 12:57 PM, "V. Armando Solé" <sole@esrf.fr> wrote:
> greg whittier wrote:
>> a = np.ones((400, 500000), dtype=np.float32)
>> c = np.dot(a, a.T)
>>
>>
> In such cases I create a matrix of zeros with the final size and I fill
> it with a loop of dot products of smaller chunks of the original a matrix.
>
> The MDP package also does something similar.
>
> Armando
>

Thanks.  I've done that as a workaround, but I was hoping there was a
more elegant, "native" solution.

Thanks for the pointer to MDP by the way!  Looks very interesting.


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