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

[Alfredo Jaramillo]

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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