You have not preallocated the matrix correctly. Matt
On Wed, Jun 10, 2009 at 1:10 PM, xiaoyin ji <sapphire.jxy at gmail.com> wrote: > Hi, > > I've just got a problem with MatSetValues. I have a loop of about 1 > million and 6 MatSetValues call inside. The loop runs very slow( about > several minutes or more), but if I comment one or two MatSetValues > then it will finish in seconds. Any hints? Thank you! > > Xiaoyin Ji > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20090610/14f0bd23/attachment.htm>
