T J wrote:
On Tue, Jan 20, 2009 at 6:57 PM, Neal Becker <ndbecker2@gmail.com> wrote:
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).
I'm not sure if I've understood everything here, but I think that pyublas provides exactly what you need.
It might if I had used this for all of my c++ code, but I have a big library of c++ wrapped code that doesn't use pyublas. Pyublas takes numpy objects from python and allows the use of c++ ublas on it (without conversion). Most of my code doesn't use numpy, it uses plain ublas to represent vectors, and ublas handles storage. I can only interface to/from numpy with conversion. I'm interested in pyublas, but devel seems very quiet for a while.