Hi, I was discussing with another user in another forum (cfd-online.com) about using PETSc in my cfd code. I am now using KSP to solve my momentum and poisson eqn by inserting values into the matrix. I was told that using PETSc this way is only for unstructured grids. It is very inefficient and much slower if I'm using it for my structured grid because I am not exploiting the regular structure of my grid.
Is that true? I'm solving flow around airfoil using c-grid. So how can I improve? Is it by using DA? I took a glance and it seems quite complicated. Also, is multigrid available in PETSc? Chapter 7 discusses about it but it seems very brief. Is there a more elaborate tutorial besides that c examples? Hope someone can give me some ideas. Thank you. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20070126/de61d420/attachment.htm>
