Burcin Erocal wrote: > On Sat, 11 Jul 2009 10:53:04 -0700 > William Stein <wst...@gmail.com> wrote: > >> On Sat, Jul 11, 2009 at 9:37 AM, Dr. David >> Kirkby<david.kir...@onetel.net> wrote: >>> It's taken more than 12 hours to build ATLAS on t2, and it is still >>> going. William said it takes a lot less if some tuning parameters >>> are known for the machine, so it does not have to go through that >>> again. I asked on the ATLAS help forum, but so far no reply for how >>> to save these parameters. >>> >>> So a few question. >>> >>> 1) Does anyone know how to save the parameters for a machine, or >>> just force ATLAS to use a semi of semi-sensible defaults. >> It's documented. You have to read the ATLAS documentation. Michael >> Abshoff regularly added new pretune parameters for the ATLAS spkg, but >> now somebody else will have to figure out how to do it and do it. > > Trac tickets #1547, #1886, #2108, and #5741 look relevant. Especially > #1547 points to the instructions here: > > http://math-atlas.sourceforge.net/devel/atlas_devel/atlas_devel.html#SECTION00070000000000000000 > > > #1886 [0] also has this short recipe from William: > > 1. sage -f -m atlas-3.8.p7 > 2. cd spkg/build/atlas-3.8.p7 > 3. cd ATLAS-build/ARCHS > 4. make ArchNew > 5. make tarfile > > > [0] http://trac.sagemath.org/sage_trac/ticket/1886#comment:1 > > > Cheers, > Burcin
Thank you. I'll take a look at that. Assuming it will only issue 'arch' to get the information on the machine, then both t2 and my machine at home will return 'sun4', despite the fact they are quite different boxes. It would be good to chose between the sun4u (UltraSPARC machines) and the sun4v (T2/T2+ multi-core, multi-threaded processor). I got the feeling reading the docs that the 'arch' command is issued. I hope its a bit more configurable than that. --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
