[petsc-users] INSERTVALUES after ADDVALUES

[Jed Brown]

1. Assemble twice

2. Do not insert into Dirichlet rows/columns, perhaps by using negative
indices. Then you can always ADD.
On Oct 21, 2011 10:23 AM, "NAN ZHAO" <zhaonanavril at gmail.com> wrote:

> Dear all,
>
> I am assembling a matrix using ADD_VALUES option, I need to insert certain
> values to the matrix cause I need to apply some boundary conditions. But I
> got the error
> [0]PETSC ERROR: Object is in wrong state!
> [0]PETSC ERROR: You have already added values; you cannot now insert!
>
> Is anyone have a solution of this?
>
> Thanks,
> Nan
>
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