Yes, it is a common situation that fortran vs C ordering makes a huge difference in various computations. I optimized the online dictionary learning algorithm quite heavily based on those principles. I am sure that they are other low hanging fruits.
Maybe we need a list of different opitmization tricks. I tried to do such a list in http://scipy-lectures.github.com/advanced/optimizing/index.html#writing-faster-numerical-code Rereading it, I realize that the point that you raise (fortran vs C ordering) is present, but probably not stressed enough. I'll update this. Thanks a lot for sharing this on the mailing list, it is useful. Gaël ------------------------------------------------------------------------------ Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox _______________________________________________ Scikit-learn-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
