On Friday, April 9, 2010, Leo Maloney <leo.b.malo...@gmail.com> wrote: > My Matrix consists of zeros ones, and -1/9s, so I was intially > computing it over Q. I'm trying to re-run the program over R in hopes > that it will use approximations rather than try to explicitly state > the fractions. I am using a Macintosh OSX with 4 gigs of ram, it > seems that this should be sufficient.
Definitely try doing it with a dense matrix over QQ too; it might be possible, though the answer will be big. If you provide me the matrix I could try on my 128gb computer... I also know the matrix inversion code over QQ well, since I wrote some of it. > > On Apr 9, 11:03 am, Robert Bradshaw <rober...@math.washington.edu> > wrote: >> On Apr 9, 2010, at 10:53 AM, Leo Maloney wrote: >> >> > I'm trying to compute the inverse of a 5000 x 5000 sparse matrix. >> >> What is the basering? >> >> > I'm getting an EOF error after it runs for about 5 hours, and then it >> > states that sage is trying to access unallocated memory. Is there a >> > way I can increase the memory for this computation? Every time I >> > Google it, all I can find is the benefits sage(plant) has on memory. >> >> What operating system are you on. Are you using Sage in a VM (on >> Windows)? If so, you can increase the amount of memory allocated to >> the virtual machine. Otherwise, have you checked to see if you even >> have any memory left on your computer when doing the computation? >> (Perhaps the only way to increase the memory is to buy more RAM or run >> it on a different computer.) >> >> - Robert > > -- > To post to this group, send email to sage-support@googlegroups.com > To unsubscribe from this group, send email to > sage-support+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/sage-support > URL: http://www.sagemath.org > > To unsubscribe, reply using "remove me" as the subject. > -- William Stein Associate Professor of Mathematics University of Washington http://wstein.org -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
