Hi, On Thu, Dec 04, 2008 at 02:47:22AM -0800, Mike Hansen wrote: > I don't have a whole lot of time, but I put some improvements up at > http://sagenb.org:8000/home/pub/94/ and included some timings there. > h6.eigenvalues() took 0.11 seconds to run on my machine. It looks > like everything you're doing can be done with exact arithmetic so that > you don't have to use CDF. Most of the matrices are over QQ, and the > ones that are complex are over QQ[sqrt(-1)].
Thanks, this is great. This way the h6.eigenvalues took less than 1 second, and h6.eigenvectors_right took 18 seconds. I don't understand why complex floats are so much slower than rationals: 18 seconds versus 4+ hours (unfinished)! In the end the eigenvalues are real (floats). regards, Jan --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
