On Nov 23, 2007 7:15 AM, Joel B. Mohler <[EMAIL PROTECTED]> wrote: > > On Fri, Nov 23, 2007 at 07:08:02AM -0800, mabshoff wrote: > > Hello Joel, > > > > > I'm also posting this > > > athttp://www.singular.uni-kl.de/forum/viewforum.php?f=10 > > > as soon as I get registered on the forum. > > > > > > > You don't need to be registered at the Singular forum in order to be > > able to post. The 3-0-4 tarball is already up on the Singular website, > > so you might want to try your luck with that version first. I think it > > is unlikely that the new release will fix the issue, but it is worth a > > try. > > Oops, I failed to mention that it was the vanilla 3-0-4 that I actually tested > it with (I installed it outside of sage). And, yes, they allow anonymous > posts, but there's generally conveniences to being registered (like > notification of replies and what-not). > > http://singular.mathematik.uni-kl.de/forum/viewtopic.php?t=1652 > >
Singular errors or not, Singular is really pitiful at this problem compared to Magma -- which is what we should have as a baseline for solid robust behavior in this case: In SAGE (via libsingular) on a 2.33Ghz laptop: sage: R.<p10,g0,g1,g2,g3,g4,X1,X2> = QQ[]; t = -p10^170*X1^10*X2^10+p10^130*X1^10*X2^5+p10^130*X1^5*X2^10-p10^90*X1^5*X2^5+p10^80*X1^5*X2^5-p10^40*X1^5-> sage: time a = t.factor() CPU times: user 10.80 s, sys: 8.91 s, total: 19.71 s sage: time a = t.factor() CPU times: user 3.34 s, sys: 2.39 s, total: 5.73 s sage: time a = t.factor() CPU times: user 21.52 s, sys: 15.10 s, total: 36.62 s Now compare with Magma, which is the sort of performance we want: sage: tt = magma(t) sage: time w = tt.Factorization() CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s Wall time: 0.02 sage: time w = tt.Factorization() CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s Wall time: 0.02 sage: time w = tt.Factorization() CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s Wall time: 0.01 sage: time w = tt.Factorization() CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s Wall time: 0.05 By the way, trac #1250 has a patch so at least control-c works when factoring. Anyway, this really really really bugs me. William --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
