[petsc-users] HYPRE hanging or slow? from observation

[Hao Zhang]

hi,

I implemented HYPRE preconditioner for my study due to the fact that
without preconditioner, PETSc solver will take thousands of iterations to
converge for fine grid simulation.

with HYPRE, depending on the parallel partition, it will take HYPRE forever
to do anything. observation of output file is that the simulation is
hanging with no output.

Any idea what happened? will post snippet of code.



-- 
Hao Zhang
Dept. of Applid Mathematics and Statistics,
Stony Brook University,
Stony Brook, New York, 11790
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