On Mon, Aug 17, 2009 at 11:06 AM, William Stein<wst...@gmail.com> wrote: > > On Mon, Aug 17, 2009 at 6:27 AM, Mani chandra<mchan...@iitk.ac.in> wrote: >> >> William Stein wrote: >>> On Mon, Aug 17, 2009 at 2:26 AM, Juan Jose >>> Garcia-Ripoll<juanjose.garciarip...@googlemail.com> wrote: >>> >>>> On Mon, Aug 17, 2009 at 10:57 AM, William Stein<wst...@gmail.com> wrote: >>>> >>>>> Note that Sage's Maxima uses ECL. So the basic question is, how can >>>>> we increase the memory that Maxima + ECL can use? >>>>> >>>> The limits ECL has are by default too small for big applications, but >>>> it is intentionally done so. However, changing them is pretty easy: >>>> add a call to ext:set-limit in any file of maxima that forms part of >>>> the final executable. >>>> >>>> The different memory limits that can be independently controlled are >>>> listed here >>>> http://ecls.sourceforge.net/new-manual/re34.html >>>> So for instance, in your case, which hits the dynamically allocated >>>> memory limit, you might add the following >>>> (ext:set-limit 'ext:heap-size (* 1024 1024 1024)) >>>> to maxima/src/ecl-port.lisp in order get 1GB memory limit. >>>> >>>> Juanjo >>>> >>> >>> Thanks!!! I've made this trac #6772: >>> >>> http://trac.sagemath.org/sage_trac/ticket/6772 >>> >>> -- William >>> >>> > >>> >>> >> Hi, >> >> I'm glad that this issue has finally been taken up. But as an interm >> measure, how does one pass this command through a sage code? I tried >> maxima.eval_String, but it doesn't seem to work. > > My understanding is that one has to modify the maxima source code > itself and recompile maxima. > >> >> In an unrelated note, I rewrote my code trying to use a standalone >> installation of sympy and it takes forever to compute what maxima in >> sage did in a few mins, so I guess sympy is nowhere close to "industrial >> strength". >> >> Mani chandra >> > > You should post your program to the sympy list and complain. I'm sure > they would love to fix whatever is making it so slow. A lot of people > are actively working on sympy this summer.
Could you please post your program to us? I just spent 3 months working on MHD in Los Alamos and as a SymPy developer I would love to see your real life application and what makes it slow and fix it. Thanks, Ondrej --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
