[petsc-users] KrylovSchur solver diverges when setting EPS_GHEP

Denis Davydov davydden at gmail.com
Fri Nov 7 08:45:09 CST 2014

> What do you mean by 'breaks convergence'? Are you sure your matrices are symmetric?
> Jose

I shall clarify that the calculated by EPSComputeResidualNorm residual norm 
is bigger than the required tolerance, set by EPSSetTolerances. 

In light of your latest answer about B-norms, 
supposedly this is a wrong approach. 

Sorry for being un-precise initially.

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