[petsc-users] [Libmesh-users] Trying to set up a field-split preconditioner

[subramanya sadasiva]

I forgot to mention it, but I am using this with the petsc virs solver. 

> From: potaman at outlook.com
> To: petsc-users at mcs.anl.gov; libmesh-users at lists.sourceforge.net
> Date: Fri, 19 Jul 2013 20:56:39 -0400
> Subject: [Libmesh-users] Trying to set up a field-split preconditioner
> 
> 
> 
> 
> Hi, 
> I am trying to set up a fieldsplit preconditioner for my Cahn Hilliard solver and I get the following error, 
> 
> 
> [0]PETSC ERROR: --------------------- Error Message ------------------------------------[0]PETSC ERROR: Petsc has generated inconsistent data![0]PETSC ERROR: Unhandled case, must have at least two fields, not 0![0]PETSC ERROR: ------------------------------------------------------------------------
> These are the options that I am using, -ch_solve is just a prefix. 
> 
> 
> -ch_solve_pc_type fieldsplit-ch_solve_pc_fieldsplit_type schur-ch_solve_fieldsplit_block_size 2-ch_solve_fieldsplit_0_field 1-ch_solve_fieldsplit_1_field 0-ch_solve_fieldsplit_0_ksp_type cg -ch_solve_fieldsplit_0_pc_type hypre-ch_solve_fieldsplit_0_pc_type_hypre boomeramg -ch_solve_fieldsplit_1_ksp_type cg-ch_solve_fieldsplit_1_pc_type hypre -ch_solve_fieldsplit_1_pc_type_hypre boomeramg
> Any ideas?
> Thanks,Subramanya 
> 
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