That was fast! Thanks for looking into the problem. I'll be doing more extensive calculations over the next couple of weeks (I'm porting some Maple code). I'll let you know if I run into any other problems. I'm excited about the prospect of a 17-fold performance increase.
Thanks very much, -- [EMAIL PROTECTED] On Dec 9, 11:34 pm, "Mike Hansen" <[EMAIL PROTECTED]> wrote: > Hello, > > The actual issue was that I forgot to covert symmetrica's LONGINT type > ( 22 ) over to the correct Sage type. I hadn't actually tested it > with calculations that got up to numbers that big. I made a ticket > for this and posted a patch:http://sagetrac.org/sage_trac/ticket/1445 > It will be in the next version ( 2.9 ) which will come out in about 3 > days. > > --Mike > > On Dec 9, 2007 10:01 PM, [EMAIL PROTECTED] > > <[EMAIL PROTECTED]> wrote: > > > I'm trying to use the combinatorics features in Sage to do some Chern > > class calculations. When I run the commands below, I get exceptions > > that I don't know how to interpret. > > > The same calculation in Maple using John Stembridge's SF package > > completes successfully using roughly 149 MB and 7.08 s CPU time. > > > Is this just an issue of memory limitation? If so, can (and how do) I > > lift the limitation to access more of the 2 GB I have on the machine > > I'm running this on? > > > code follows: > > I'm using Sage 2.8.15 on an i386 Linux platform. I also tried this on > > an Intel OS X 10.5 machine with the same result. Also, all the powers > > of "f" from 1 to 7 work fine. f^8 and higher powers fail. > > ----------------------------------- > > > sage: s=SFASchur(QQ) > > sage: f=s([2,1]); f > > s[2, 1] > > sage: f^8 > > --------------------------------------------------------------------------- > > <type 'exceptions.NotImplementedError'> Traceback (most recent call > > last) > > > /Users/benjaminjones/Desktop/sage-2.8.15-osx10.5-intel-i386-Darwin/ > > <ipython console> in <module>() > > > /Users/benjaminjones/Desktop/sage-2.8.15-osx10.5-intel-i386-Darwin/ > > local/lib/python2.5/site-packages/sage/combinat/sfa.py in > > __pow__(self, n) > > 881 z = A(Integer(1)) > > 882 for i in range(n): > > --> 883 z *= self > > 884 return z > > 885 > > > /Users/benjaminjones/Desktop/sage-2.8.15-osx10.5-intel-i386-Darwin/ > > element.pyx in sage.structure.element.RingElement.__imul__() > > > . > > . > > . > > . > > > /Users/benjaminjones/Desktop/sage-2.8.15-osx10.5-intel-i386-Darwin/ > > symmetrica.pxi in sage.libs.symmetrica.symmetrica._py() > > > <type 'exceptions.NotImplementedError'>: 22 > > sage: --~--~---------~--~----~------------~-------~--~----~ 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://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~----------~----~----~----~------~----~------~--~---
