Hi, I've been noticing that singular's factoring is grotesquely slow at times. What's really strange is that the speed fluctuates wildly. I've observed this speed fluctuation other places in singular as well. I found http://www.sagetrac.org/sage_trac/ticket/872 and thought it might be that, but I'm running 2.8.12 and the problem persists. I also tried the vanilla ix86-Linux .tar.gz from singular's web-site and it also is affected.
Here's where I'm seeing the bug: Try to factor the following fairly modest 8 variable polynomial. I'm not going to hazard a guess how long the factorize will take. ring R=0,(p10,g0,g1,g2,g3,g4,X1,X2),dp; poly 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-p10^40*X2^5+1; factorize(t); Now, Up-Arrow-Enter at the singular prompt to "factorize(t);" again and you'll wait some very different time to get the same answer. I've seen the answer nearly instantaneously some times, but other times I'm waiting 5 minutes (or more). I'm also posting this at http://www.singular.uni-kl.de/forum/viewforum.php?f=10 as soon as I get registered on the forum. -- Joel --~--~---------~--~----~------------~-------~--~----~ 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/ -~----------~----~----~----~------~----~------~--~---
