On Monday, September 19, 2016 at 9:04:35 AM UTC+2, Ehsan Mihankhah wrote: > > I managed to compile the sample codes but the problem is that when I run > the code I receive errors from ARPACK referring to "info=-9" in Pdnaupd. > and following "info=-9" I see the error is about initial vector being zero > and I cannot solve this problem by tuning any parameter it seems. >
if you set initial vector by set_initial_vector(), then make sure it's nonzero (i.e. random vector or a solution from previous calculations). Otherwise a random vector will be used internally by (p)Arpack, see https://github.com/dealii/dealii/blob/master/include/deal.II/lac/parpack_solver.h#L724 Regards, Denis. -- 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 dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
