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

[subramanya sadasiva]

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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