On Wed, Aug 8, 2012 at 1:00 PM, Jinquan Zhong <jzhong at scsolutions.com>wrote:
> This makes sense to me. I thought the preallocation only applies to > MatCreateMPIAIJwithArrays(?) and other more complicate functions.**** > > ** ** > > The matrix coming out from ScaLAPACK will be repopulated into a sparse > matrix in a much large scale. > I don't understand this exactly. You are taking the entries of the dense matrix and putting them into a much larger sparse matrix? In that case, you probably never need Elemental, but you definitely need to preallocate. > Do I need to install elemental package in PETSc in order to use > MATELEMENTAL? > Yes, just configure petsc-dev with --download-elemental. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120808/07187b72/attachment.html>
