Re: [sage-devel] Re: sage-5.0 serious bug: segfaults in basic linear algebra?
On Fri, Jun 8, 2012 at 2:54 AM, Volker Braun wrote: > For the record, I didn't get any segfaults when running > > for i in `seq 0 1000` ; do sage -c 'print > ModularSymbols(389,sign=0).cuspidal_submodule().decomposition()[0]' ; done > > on sage-5.1.beta2 and Fedora 17. It could be an OS X thing. This uses numerical BLAS behind the scenes, and OS X has its own. -- William > > > > -- > To post to this group, send an email to sage-devel@googlegroups.com > To unsubscribe from this group, send an email to > sage-devel+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/sage-devel > URL: http://www.sagemath.org -- William Stein Professor of Mathematics University of Washington http://wstein.org -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
Re: [sage-devel] Re: sage-5.0 serious bug: segfaults in basic linear algebra?
On Friday, June 8, 2012 11:54:58 AM UTC+2, Volker Braun wrote:
>
> For the record, I didn't get any segfaults when running
>
> for i in `seq 0 1000` ; do sage -c 'print
> ModularSymbols(389,sign=0).cuspidal_submodule().decomposition()[0]' ; done
>
> on sage-5.1.beta2 and Fedora 17.
>
>
I just ran
for i in {1..100} ; do sage -c 'print
ModularSymbols(389,sign=0).cuspidal_submodule().decomposition()[0]' ; done
without any errors on sage-5.0 and OS X 10.5.
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Re: [sage-devel] Re: sage-5.0 serious bug: segfaults in basic linear algebra?
For the record, I didn't get any segfaults when running for i in `seq 0 1000` ; do sage -c 'print ModularSymbols(389,sign=0).cuspidal_submodule().decomposition()[0]' ; done on sage-5.1.beta2 and Fedora 17. -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
Re: [sage-devel] Re: sage-5.0 serious bug: segfaults in basic linear algebra?
On Thu, Jun 7, 2012 at 4:41 PM, Nils Bruin wrote: > On Jun 7, 4:19 pm, William Stein wrote: >> Hi Sage-Devel, >> >> I'm randomly running into segfaults when multiplying matrices over the >> integers, in the course of doing basic modular symbols calculations. >> For example, sometimes (but not always), this crashes: >> >> sage: M = ModularSymbols(389,sign=0).cuspidal_submodule().decomposition()[0] > > I observed (once) on Sage 4.7.1 (Fedora 15 x64): > > sage: %time M = > ModularSymbols(389,sign=0).cuspidal_submodule().decomposition()[0] > ArithmeticError: subspace is not invariant under matrix > > I'm not able to reliably reproduce this error either. Thanks for reporting this, which is different than what I saw before. -- William > > -- > To post to this group, send an email to sage-devel@googlegroups.com > To unsubscribe from this group, send an email to > sage-devel+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/sage-devel > URL: http://www.sagemath.org -- William Stein Professor of Mathematics University of Washington http://wstein.org -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
