[petsc-users] Multiple solves with PCMG fail

Jed Brown jed at jedbrown.org
Mon Oct 27 15:28:12 CDT 2014


Filippo Leonardi <filippo.leonardi at sam.math.ethz.ch> writes:
>> -ksp_chebyshev_estimate_eigenvalues_random
>
> Can try this but the problem, to me, seems deeper (because inherited from each 
> solve afterwards).

Are you changing the operator between solves?  Or just solving different
right-hand sides?  If the latter, the spectral estimates are reused.
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