Hypre

[tribur at vision.ee.ethz.ch]

Dear Petsc experts,

Another, more basic problem when using Hypre:

When I try

ex2_hdf5 -f data/sphereInBlockFiner_a_cd3t.h5 -pc_type hypre 
-pc_hypre_type pilut -log_summary

where sphereInBlock_a_cd3t.h5 contains a 102464 x 102464 matrix,
the program seems to hang (it stops with the error "=>> PBS: job 
killed: walltime 384 exceeded limit 360").
Adding the option -ksp_max_it 1 to be sure that it is not iterating 
until 10000000000000 doesn't change anything. The same happens also if 
I use -pc_hypre_type boomeramg.


It is neither the problem of my program nor of the matrix, because

ex2_hdf5 -f data/sphereInBlockFiner_a_cd3t.h5 -pc_type jacobi 
-log_summary -ksp_rtol 0.0000000001

takes only 5s and gives me the correct solution.

What do I do wrong?

Looking forward to your answer,
Kathrin