[petsc-users] fieldsplit: Unhandled case, must have at least two fields, not 1!

[Mark Adams]

>
>
> So when you say to use fieldsplit for a solve with only one field, you
> get an error saying that fieldsplit requires at least two fields?
>
>
Yes


> 1. Don't do that.
>
>
My point was that this user got this message and so I suggesting a possible
problem: giving fieldsplit parameters to a single field matrix/solver.
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