[petsc-dev] good PETSc example for weak scaling study?

[Barry Smith]

   I'm looking for a good PETSc example for a weak scaling study up to 256*65 
MPI processes. This means that 

1) the example should not have non-scalable parts to it

2) it should be easy to increase the problem size properly with the number of 
MPI processes.

3) the algorithms used should be scalable, or possible to run with a fixed 
number of iterations with a simple preconditioner

  This is for studying a new machine, not studying PETSc, and comparing KNL to 
Broadwell.

   Thanks

   Barry