[petsc-users] Multiple solves with PCMG fail

[Jed Brown]

Mark Adams <mfadams at lbl.gov> writes:
> OK, so the first time there is no RHS and so not eigen estimate and the
> next solves do not check to see if a valid eigen estimate has been created.

I think so.  I'm hoping Filippo will confirm.

> Jed: could we just check for zero iterations in the eigen estimator and
> then call the random thing.  Or something along those lines.

Yeah, that should work; an alternative is to defer the estimate until
the next solve.
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