[Numpy-discussion] python numpy code many times slower than c++
Wed Jan 21 06:28:50 CST 2009
Robert Kern wrote:
> On Tue, Jan 20, 2009 at 20:57, Neal Becker <email@example.com> wrote:
>> I see the problem. Thanks for the great profiler! You ought to make
>> this more widely known.
> I'll be making a release shortly.
>> It seems the big chunks of time are used in data conversion between numpy
>> and my own vectors classes. Mine are wrappers around boost::ublas. The
>> conversion must be falling back on a very inefficient method since there
>> is no special code to handle numpy vectors.
>> Not sure what is the best solution. It would be _great_ if I could make
>> boost::python objects that export a buffer interface, but I have
>> absolutely no idea how to do this (and so far noone else has volunteered
>> any info on this).
> Who's not volunteering information, boost::python or us?
I've asked on python.c++, the home of boost::python and friends. I've spent
a little time on it myself, but I think this job requires great knowledge of
python c api as well as the mysteries of boost::python.
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