[petsc-users] error when solving a linear system with gmres + pilut/euclid

[Alfredo Jaramillo]

complementing the previous message, the same error appears when using
boomeramg

On Mon, Aug 24, 2020 at 6:05 PM Alfredo Jaramillo <ajaramillopalma at gmail.com>
wrote:

> Dear PETSc developers,
>
> I'm trying to solve a linear problem with GMRES preconditioned with pilut
> from HYPRE. For this I'm using the options:
>
> -ksp_type gmres -pc_type hypre -pc_hypre_type pilut -ksp_monitor
>
> If I use a single core, GMRES (+ pilut or euclid) converges. However, when
> using multiple cores the next error appears after some number of iterations:
>
> [0]PETSC ERROR: Scalar value must be same on all processes, argument # 3
>
> relative to the function VecMAXPY. I attached a screenshot with more
> detailed output. The same happens when using euclid. Can you please give me
> some insight on this?
>
> best regards
> Alfredo
>
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