On May 30, 2012, at 4:40 PM, Jed Brown wrote: > On Wed, May 30, 2012 at 9:37 AM, Hui Zhang <mike.hui.zhang at hotmail.com> > wrote: >> How is the matrix assembled? >> > In a deterministic way. > > Do you use ADD_VALUES with off-process entries? If so, the message order may > be different. You can also add -vecscatter_reproduce to make VecScatter with > ADD_VALUES process the messages in a static order instead of in the order > they arrive (somewhat slower).
Thanks for details. For the moment, it seems not necessary for me. >> How different? >> > Not very much. The last residual can vary in its trailing digits, e.g. from > 6.5819e-7 to 6.5820e-7 > > This looks fine. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120530/acd4d595/attachment.html>
