dolfin team mailing list archive

[Johan Hake <hake@xxxxxxxxx>]

On Tuesday 07 July 2009 22:07:13 Garth N. Wells wrote:
> Johan Hake wrote:
> > On Tuesday 07 July 2009 19:18:22 Garth N. Wells wrote:
> >> Kristian Oelgaard wrote:
> >>> Hi,
> >>>
> >>> I get:
> >>>
> >>> Solving linear variational problem
> >>>   Matrix of size 1089 x 1089 has 7361 nonzero entries.
> >>>   Applying boundary conditions to linear system.
> >>>   *** Warning: Ignoring unknown parameter "absolute_tolerance" in
> >>> parameter set "krylov_solver" when updating parameter set "parameters".
> >>>   *** Warning: Ignoring unknown parameter "divergence_limit" in
> >>> parameter set "krylov_solver" when updating parameter set "parameters".
> >>>   *** Warning: Ignoring unknown parameter "gmres_restart" in parameter
> >>> set "krylov_solver" when updating parameter set "parameters".
> >>>   *** Warning: Ignoring unknown parameter "maximum_iterations" in
> >>> parameter set "krylov_solver" when updating parameter set "parameters".
> >>>   *** Warning: Ignoring unknown parameter "monitor_convergence" in
> >>> parameter set "krylov_solver" when updating parameter set "parameters".
> >>>   *** Warning: Ignoring unknown parameter "relative_tolerance" in
> >>> parameter set "krylov_solver" when updating parameter set "parameters".
> >>>   *** Warning: Ignoring unknown parameter "report" in parameter set
> >>> "krylov_solver" when updating parameter set "parameters".
> >>>   *** Warning: Ignoring unknown parameter "shift_nonzero" in parameter
> >>> set "krylov_solver" when updating parameter set "parameters".
> >>> terminate called after throwing an instance of 'std::runtime_error'
> >>>   what():  *** Error: Unable to access parameter "report" in parameter
> >>> set "parameters", parameter not defined.
> >>> [mech028:15991] *** Process received signal ***
> >>> [mech028:15991] Signal: Aborted (6)
> >>> [mech028:15991] Signal code:  (-6)
> >>> [mech028:15991] [ 0] [0xb805d410]
> >>> [mech028:15991] [ 1] /lib/tls/i686/cmov/libc.so.6(abort+0x188)
> >>> [0xb6154098] [mech028:15991] [ 2]
> >>> /usr/lib/libstdc++.so.6(_ZN9__gnu_cxx27__verbose_terminate_handlerEv+0x
> >>>15 8) [0xb636e8f8]
> >>> [mech028:15991] [ 3] /usr/lib/libstdc++.so.6 [0xb636c7d5]
> >>> [mech028:15991] [ 4] /usr/lib/libstdc++.so.6 [0xb636c812]
> >>> [mech028:15991] [ 5] /usr/lib/libstdc++.so.6 [0xb636c94a]
> >>> [mech028:15991] [ 6]
> >>> /home/oelgaard/fenics/dolfin/local/lib/libdolfin.so.0(_ZNK6dolfin6Logge
> >>>r5 errorESs+0x93) [0xb7f166a3]
> >>> [mech028:15991] [ 7]
> >>> /home/oelgaard/fenics/dolfin/local/lib/libdolfin.so.0(_ZN6dolfin5errorE
> >>>Ss z+0x9f) [0xb7f1f62f]
> >>> [mech028:15991] [ 8]
> >>> /home/oelgaard/fenics/dolfin/local/lib/libdolfin.so.0(_ZN6dolfin10Param
> >>>et ersclESs+0xb3) [0xb7fc7833]
> >>> [mech028:15991] [ 9]
> >>> /home/oelgaard/fenics/dolfin/local/lib/libdolfin.so.0(_ZN6dolfin17PETSc
> >>>Kr ylovSolver5solveERKNS_11PETScMatrixERNS_11PETScVectorERKS4_+0xb2)
> >>> [0xb7ee9ce2]
> >>> [mech028:15991] [10]
> >>> /home/oelgaard/fenics/dolfin/local/lib/libdolfin.so.0(_ZN6dolfin17PETSc
> >>>Kr ylovSolver5solveERKNS_13GenericMatrixERNS_13GenericVectorERKS4_+0xfb)
> >>> [0xb7eea3db]
> >>> [mech028:15991] [11]
> >>> /home/oelgaard/fenics/dolfin/local/lib/libdolfin.so.0(_ZN6dolfin12Krylo
> >>>vS olver5solveERKNS_13GenericMatrixERNS_13GenericVectorERKS4_+0x18e)
> >>> [0xb7e69c1e]
> >>> [mech028:15991] [12]
> >>> /home/oelgaard/fenics/dolfin/local/lib/libdolfin.so.0(_ZN6dolfin18Varia
> >>>ti onalProblem12solve_linearERNS_8FunctionE+0xaaf) [0xb7e674af]
> >>> [mech028:15991] [13]
> >>> /home/oelgaard/fenics/dolfin/local/lib/libdolfin.so.0(_ZN6dolfin18Varia
> >>>ti onalProblem5solveERNS_8FunctionE+0x2a) [0xb7e6814a]
> >>> [mech028:15991] [14] ./demo(main+0x497) [0x805db07]
> >>> [mech028:15991] [15]
> >>> /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5) [0xb613d775]
> >>> [mech028:15991] [16] ./demo [0x805d541]
> >>> [mech028:15991] *** End of error message ***
> >>>
> >>> if I do:
> >>>
> >>>   problem.parameters("linear_solver") = "iterative";
> >>>
> >>> in the Poisson demo.
> >>>
> >>> Is this a bug, or am I using the new parameter system incorrectly?
> >>
> >> Take a look at the change Johan made recently to LUSolver. Same thing
> >> probably needs to be done for KrylovSolver.
> >
> > This one beats me... It is another problem here.
>
> I've added a function to set parameters for PETScKrylovSolver and
> everything works now.

Ahh! I was only looking at the KrylovSolver class. 

There is a lot of default_parameters functions for the different 
KrylovSolvers, returning the same set of parameters. Is there a reason for 
not being able to share some code here?

Johan

> > KrylovSolver::parameters get initialized. However, it looks like
> >
> >    solver.parameters.update(parameters["krylov_solver"]);
> >
> > does not update the krylov solvers parameters, but rather an empty
> > parameters, and therefore the warnings.
>
> What exactly does (or should)
>
>     solver.parameters.update(parameters["krylov_solver"]);
>
> do?
>
> Garth
>
> > Also note that in python we use square brackets for all levels in the
> > parameter hierarchy, so it should be:
> >
> >   problem.parameters["linear_solver"] = "iterative"
> >
> > But
> >
> >   problem.parameters("linear_solver")
> >
> > should report an error message.
> >
> > Johan
> >
> >> Garth
> >>
> >>> Kristian
> >>>
> >>> _______________________________________________
> >>> DOLFIN-dev mailing list
> >>> DOLFIN-dev@xxxxxxxxxx
> >>> http://www.fenics.org/mailman/listinfo/dolfin-dev
> >>
> >> _______________________________________________
> >> DOLFIN-dev mailing list
> >> DOLFIN-dev@xxxxxxxxxx
> >> http://www.fenics.org/mailman/listinfo/dolfin-dev