[sage-support] Re: Cython help
Hi Dylan, On Fri, Apr 24, 2009 at 12:47 PM, drupel dylanru...@gmail.com wrote: Hi all, I am new to Sage and I don't quite understand how to convert my code to cython code to speed up my program. I am doing a lot of symbolic manipulations and using the PolynomialRing object. Below I have some of my code so that you can see the types of manipulations I hope to speed up: I would not think about using Cython until you know what is taking all of the time in your program. What would really be useful is some sample input of the computations that you want to run (along with the code that makes them work) so some actual profiling can be done. Just looking at your code, it seems like.most of the slowdown could come from doing arithmetic with symbolic expressions which currently talk to Maxima and have quite a bit of overhead. This will change in Sage 4.0 which will be out next month. --Mike --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Cython help
Thanks Mike, Is it possible to do the symbolic computations with Cython? If not, I will wait until Sage 4.0 comes out and see what happens. Dylan --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Cython help
On Fri, Apr 24, 2009 at 1:40 PM, drupel dylanru...@gmail.com wrote: Thanks Mike, Is it possible to do the symbolic computations with Cython? Yes, you can do them from within Cython, but it's not going to give you the speed up that you might think / want. Making code faster is almost entirely finding out exactly where all of the time is being spent. If not, I will wait until Sage 4.0 comes out and see what happens. If you send me your code (along with sample runs), I'll go through and speed things up for you. That are optimizations that you can do by just being conscious of data types and things like that. --Mike --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Cython help
I sent a copy of my code and a few samples of what I would like to do with it to your gmail. Thanks for your help, Dylan On Apr 24, 1:48 pm, Mike Hansen mhan...@gmail.com wrote: On Fri, Apr 24, 2009 at 1:40 PM, drupel dylanru...@gmail.com wrote: Thanks Mike, Is it possible to do the symbolic computations with Cython? Yes, you can do them from within Cython, but it's not going to give you the speed up that you might think / want. Making code faster is almost entirely finding out exactly where all of the time is being spent. If not, I will wait until Sage 4.0 comes out and see what happens. If you send me your code (along with sample runs), I'll go through and speed things up for you. That are optimizations that you can do by just being conscious of data types and things like that. --Mike --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
