On 10/7/19 5:32 AM, 'Maxi Miller' via deal.II User Group wrote:
> I implemented the changes in step-36 suggested in the tutorial for using
> ARPACK instead of PETSc (as shown in the attachment). Now, the solver reports
> a convergence in 4294967295 iterations (with correct result), thus I assume a
> overflow/underflow bug. Is that something which I should report in the github
> issues?
4294967295=-1 when expressed in unsigned int. This usually indicates some kind
of error condition. It would be worth figuring out where this number is
generated because it's pretty clear that that is not the actual number of
iterations performed.
Best
W.
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Wolfgang Bangerth email: bange...@colostate.edu
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