Dynamic allocation of Non zeros?

Berend van Wachem berend at chalmers.se
Thu Nov 1 16:17:02 CDT 2007

Hi Barry,

>     Perhaps you could describe how your matrix entries are generated and 
> we can suggest a
> preallocation scheme?

Are there examples of preallocation schemes for PETSc? For instance, if 
I would like to solve Poisson equation on an irregular grid (9 point 
stencil in 2d and 27 in 3d) on n processors?


More information about the petsc-users mailing list