Re: [sage-devel] multiprecision linear algebra

2010-05-21 Thread Fredrik Johansson
On Fri, May 21, 2010 at 11:17 AM, Sergey Bochkanov < sergey.bochka...@alglib.net> wrote: > correction to my previous message: > > > It leads to unnecessary allocation of temporaries and some > > performance penalty (about 25-30% for 128-bit precision). > > Sorry, I made a mistake when es

Re: [sage-devel] multiprecision linear algebra

2010-05-21 Thread Sergey Bochkanov
correction to my previous message: > It leads to unnecessary allocation of temporaries and some > performance penalty (about 25-30% for 128-bit precision). Sorry, I made a mistake when estimating MPLAKACK performance. "25-30%" are ALGLIB's, not MPLAPACK's. I've never measured MPLAPAC

Re: [sage-devel] multiprecision linear algebra

2010-05-20 Thread Sergey Bochkanov
Hello, Jason. You wrote 21 мая 2010 г., 3:48:03: > A while ago someone talked about incorporating ALGLIB into Sage to > provide, among other things, multiprecision linear algebra. It was me :) I am working on this issue. I expect that interface between double precision ALGLIB and Python w

[sage-devel] multiprecision linear algebra

2010-05-20 Thread Jason Grout
A while ago someone talked about incorporating ALGLIB into Sage to provide, among other things, multiprecision linear algebra. I just saw another package that does this: http://mplapack.sourceforge.net/ Does anyone have experience with mplapack? How does it compare to ALGLIB in linear algeb