> Because of the first line with 25 DoFs I think the round-off errors > occurs only in KellyErrorEstimator<dim>::estimate(...).
I don't know -- the solution on individual cells might also be subtly different in previous steps already but it doesn't matter. This is definitely a difficult problem. If you want to try something, set CXXFLAGS=-ffloat-store before calling ./configure, then re-compile everything and see if that makes a difference. It prevents certain operations from being optimized and so could in principle make the code behave in the same way in optimized and debug mode. It'll make optimized code slower, however. Best W. ------------------------------------------------------------------------- Wolfgang Bangerth email: [email protected] www: http://www.math.tamu.edu/~bangerth/ _______________________________________________ dealii mailing list http://poisson.dealii.org/mailman/listinfo/dealii
