Thanks, Wolfgang Bangerth PreconditionIdentity() is worked. Best, chen Wolfgang Bangerth <[email protected]> 于2022年4月6日周三 23:29写道：
> On 4/6/22 02:36, 陈敏 wrote: > > solver.solve(system_matrix, solution, system_rhs, > > PETScWrappers::PreconditionNone()); > > > > Can you try to use PreconditionIdentity() instead? > > 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]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/dealii/bfb8d2b7-419d-33fb-451f-b1e1476bd45b%40colostate.edu > . > -- 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/CADr3OdLKowpR2G3ANwhN5C3%2BqTibvfHvmatztnb%3DYfNScOZPrw%40mail.gmail.com.
