On Sat, Dec 24, 2011 at 8:11 AM, TAY wee-beng <zonexo at gmail.com> wrote:
> Hi, > > No I'm not. Will using ptype2 or ksptype2 work? > I think you should setup http://www.mcs.anl.gov/petsc/petsc-dev/docs/manualpages/PC/PCFIELDSPLIT.html probably using http://www.mcs.anl.gov/petsc/petsc-dev/docs/manualpages/PC/PCFieldSplitSetIS.html#PCFieldSplitSetIS Matt > Yours sincerely, > > TAY wee-beng > > > On 24/12/2011 3:07 PM, Matthew Knepley wrote: > > On Sat, Dec 24, 2011 at 7:42 AM, TAY wee-beng <zonexo at gmail.com> wrote: > >> Hi, >> >> I am solving 4 linear equations in my cfd code. I have declared them as: >> >> KSP ksp,ksp_semi_x,ksp_semi_y,ksp_semi_z >> >> PC pc,pc_semi_x,pc_semi_y,pc_semi_z >> >> PCType ptype >> >> KSPType ksptype >> >> However, I only want to solve the 1st eqn via hypre (thru command >> prompt), and the others via KSPBCGS. >> >> I now add: >> >> ksp_type richardson -pc_type hypre -pc_type_hypre boomeramg >> >> Are all the eqns now solved using hypre? >> >> How should I specify in the command prompt? > > > > Are you using DMDA? If so, its easy to do PCFIELDSPLIT from the command > line. > > Matt > >> >> >> -- >> Yours sincerely, >> >> TAY wee-beng >> >> > > > -- > What most experimenters take for granted before they begin their > experiments is infinitely more interesting than any results to which their > experiments lead. > -- Norbert Wiener > > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20111224/92089921/attachment.htm>
