[SciPy-Dev] GIL and gaussian filter

[Matthias Kümmerer]

Hi,

I am using scipy.ndimage.filters.gaussian_filter a lot. Often, I have to blur a 
range of arrays. This could be done perfectly in parallel, however the 
function does not release the GIL thus I cannot use threading while 
multiprocessing has quite a big overhead. When I understood the code correct, 
there are no python calls in NI_Correlate1D, which is what ultimately performs 
the filter.

Thus I wanted to ask whether it is possible to release the GIL inside the 
correlate function and make parallel filtering easier. I will be happy to help 
with this, if you can give me some hints where I have to search.

Best,
  Matthias
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 836 bytes
Desc: This is a digitally signed message part.
URL: <http://mail.python.org/pipermail/scipy-dev/attachments/20140502/c01906af/attachment.sig>