On 3/7/19 7:45 AM, Bruno Blais wrote: > > However, my GMRES stops very quickly after a certain number of newton > iteration with the following : AztecOO::Iterate error code -4: GMRES > Hessenberg ill-conditioned
This is surprising and suggests that something is wrong with the matrix, not the right hand side. At least that's what I think this probably means. Did you have the same error when you did not modify the right hand side? What happens if you just artificially create a right hand side that you know is in the range, for example by picking a random vector and multiplying it by the matrix? Best W. -- ------------------------------------------------------------------------ Wolfgang Bangerth email: [email protected] www: http://www.math.colostate.edu/~bangerth/ -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
