On Tue, Jul 07, 2009 at 09:07:13PM +0100, 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+0x15
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(_ZNK6dolfin6Logger5
errorESs+0x93) [0xb7f166a3]
[mech028:15991] [ 7]
/home/oelgaard/fenics/dolfin/local/lib/libdolfin.so.0(_ZN6dolfin5errorESs
z+0x9f) [0xb7f1f62f]
[mech028:15991] [ 8]
/home/oelgaard/fenics/dolfin/local/lib/libdolfin.so.0(_ZN6dolfin10Paramet
ersclESs+0xb3) [0xb7fc7833]
[mech028:15991] [ 9]
/home/oelgaard/fenics/dolfin/local/lib/libdolfin.so.0(_ZN6dolfin17PETScKr
ylovSolver5solveERKNS_11PETScMatrixERNS_11PETScVectorERKS4_+0xb2)
[0xb7ee9ce2]
[mech028:15991] [10]
/home/oelgaard/fenics/dolfin/local/lib/libdolfin.so.0(_ZN6dolfin17PETScKr
ylovSolver5solveERKNS_13GenericMatrixERNS_13GenericVectorERKS4_+0xfb)
[0xb7eea3db]
[mech028:15991] [11]
/home/oelgaard/fenics/dolfin/local/lib/libdolfin.so.0(_ZN6dolfin12KrylovS
olver5solveERKNS_13GenericMatrixERNS_13GenericVectorERKS4_+0x18e)
[0xb7e69c1e]
[mech028:15991] [12]
/home/oelgaard/fenics/dolfin/local/lib/libdolfin.so.0(_ZN6dolfin18Variati
onalProblem12solve_linearERNS_8FunctionE+0xaaf) [0xb7e674af]
[mech028:15991] [13]
/home/oelgaard/fenics/dolfin/local/lib/libdolfin.so.0(_ZN6dolfin18Variati
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.
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?
It iterates over the parameters in parameters["krylov_solver"] and for
each of them sets the value for the parameter with the same name found
in solver.parameters. If a matching parameter is not found, a warning
is issued. So it's the same as the update() function does for a Python
dictionary but with the difference that a warning is issued when a
parameter is not found (rather than just creating it).
