[petsc-users] Scaling GMRES residual

[Colin McAuliffe]

Hello,

I would like to use GMRES for a monolithic solution of a multiphysics  
problem. There are drastically different units in the problem and so  
the residual norm is dominated by the terms with the largest units. Is  
there a way to tell petsc to scale the residual before taking the norm  
to avoid this?

Thanks
Colin




-- 
Colin McAuliffe
PhD Candidate
Columbia University
Department of Civil Engineering and Engineering Mechanics