Hi Petsc users,
I have a question regarding the use of Hypre and especially Boomeramg.
How can we control the number of levels in the multigrid algortihm? Can we
chose it, or if not, can we display it in some way?
Best regards,
Nicolas.
--
Nicolas BATHFIELD
Chalmers University of Technology
Nicolas,
You should try the option -pc_hypre_boomeramg_max_levels in the line
command. In order to see the level's details you can use the PESTc option
-ksp_view.
Best Regards
Fernando.
Em (11:15:45), petsc-users at mcs.anl.gov escreveu:
Hi Petsc users,
I have a question regarding
Dear Fernando,
Thanks for your reply.
I had notice the value maxlevels given by -ksp_view, but I did not know
how to change this value.
Still, as the default is 25 levels I think, I have no way to know exactly
how many levels are used for a given case.
I can reformulate my question in this way:
Try -pc_hypre_boomeramg_print_statistics in the console for more
information regarding your AMG.
I believe that is the right syntax. I am not 100% though! It is a
long time ago I touched it.
With best regards, Shaman Mahmoudi
On Jan 25, 2007, at 3:31 PM, Nicolas Bathfield wrote:
Dear
Thanks,
the syntax is correct and it shows everything I need!
Best regards,
Nicolas
Try -pc_hypre_boomeramg_print_statistics in the console for more
information regarding your AMG.
I believe that is the right syntax. I am not 100% though! It is a
long time ago I touched it.
With best
Dear Nicolas,
It is a good question, but I don't know the answer...
Why don't you try to set the maximum levels to a large numbers in order to
see how many levels boomerAMG creates? I believe that it refines the grid up
to the maximum number of levels as you sad.
I am very interested in
On Thu, 25 Jan 2007, Fernando Campos wrote:
Dear Nicolas,
It is a good question, but I don't know the answer...
Why don't you try to set the maximum levels to a large numbers in order to
see how many levels boomerAMG creates? I believe that it refines the grid up
to the maximum
