On 4/5/22 04:47, Hermes Sampedro wrote:
Now I am trying to order the dof according to the components. However, I am
experiencing that when using /DoFRenumbering::component_wise/ and running with
more than 1 MPI rank, my solution vector has inf values. Which, does not
happen when using only 1 process, or using the default dof ordering. I am not
sure where the problem could be. May I ask for some suggestions to see if I
can identify where the issue can be?
This is an excellent problem to check your debugging skills. It *may* of
course be related in some way to the renumbering, but there appears to be no
logical connection between the two. On the other hand, it is easy to check for
the presence of inf values (for example, by outputting the norm of a vector).
There are two ways for inf values to appear in the solution vector: The right
hand side vector has inf values, or the iterative solver does not converge.
Both are easy enough to test. If it's the solver, you need to figure out why
that is.
Best
W.
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