[petsc-users] question about Neumann boundary condition

[Hailong Xiao]

Hi

I am solving an elliptic problem with Neumann boundary condition with dmda
routines by snes solver.
I set up the residue by DMDASetLocalFunction.
Besides the way like fix the first value to be one by myself, is there way
to do it by petsc routine? like the KSPSetNullSpace() rountine does?

-- 
Hailong
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