Thanks for the clarification Jed. But zeroing more entries than necessary would still trigger malloc calls. Would it not ?
Vijay On Apr 20, 2011 5:05 AM, "Jed Brown" <jed at 59a2.org> wrote: > On Wed, Apr 20, 2011 at 05:08, Vijay S. Mahadevan <vijay.m at gmail.com> wrote: > >> Barry, just to confirm, are you saying that MatZeroEntries would >> nullify the preallocation completely if called before >> AssmeblyBegin/End ? >> > > I can't think of a way that would happen. It may zero more entries than > necessary, but it shouldn't forget the preallocation. Note that the > preallocation in DMGetMatrix() and many other libraries actually insert > explicit zeros in the locations it has preallocated. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20110420/ba224320/attachment.htm>
