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 regards, Shaman Mahmoudi > > On Jan 25, 2007, at 3:31 PM, Nicolas Bathfield wrote: > >> 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: does boomeramg coarsen the >> "grid" to the coarsest level possible, i.e. 1 cell over the domain, or >> does it stop before that? (grid is not the right term when it comes to >> algebraic multilevel methods, but I can't find any other clear way to >> express it). How can I control the coarsening? >> >> Thinking about it, perhaps boomeramd actually refines the grid up >> to the >> maximum number of levels...Is it so? >> >> Thanks for your help. >> >> Nicolas >> >>> 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 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 >>>> Shipping and Marine Technology >>>> phone: +46 (0)31 772 1476 >>>> fax: +46 (0)31 772 3699 >>>> >>>> ---------- >>> >>> >>> >> >> >> -- >> Nicolas BATHFIELD >> Chalmers University of Technology >> Shipping and Marine Technology >> phone: +46 (0)31 772 1476 >> fax: +46 (0)31 772 3699 >> > > -- Nicolas BATHFIELD Chalmers University of Technology Shipping and Marine Technology phone: +46 (0)31 772 1476 fax: +46 (0)31 772 3699
