Not sure which file are you running from your link, but the failure suggests that you might be using an extruded measure (ds_t, ds_v, etc.) with a non-extruded mesh.




On Tue, Oct 11, 2016 at 8:04 PM +0100, "Anna Kalogirou" <A.Kalogirou@leeds.ac.uk> wrote:

Leaving the preconditioning aside for a while, I am trying to extend the problem into a mixed space of 5 function spaces, but get the error below when the solver is called. The code can be found here.

Any ideas what’s wrong?

Thanks, Anna.


Traceback (most recent call last):
  File "buoy-swe.py", line 128, in <module>
    (phi0, eta0, W0, Z0, LM_lam0_5, LM_mu0_5) = solvers_SV(LM_lam0_5, F_solver, phi_solver1, eta0, phi0, Z0, W0, eta1, phi1, Z1, W1, W0_5, rho, Mass, dt);
  File "/Users/matak/Documents/Simulations/Firedrake/Ship/Modules/Inequality constraint/Mixed system/solvers.py", line 176, in solvers_SV
    F_solver.solve()     # Solve for phi0_5, eta1, lambda0_5, mu0_5
  File "/Users/matak/firedrake/lib/python2.7/site-packages/firedrake/variational_solver.py", line 201, in solve
    self.snes.solve(None, v)
  File "PETSc/SNES.pyx", line 537, in petsc4py.PETSc.SNES.solve (src/petsc4py.PETSc.c:170012)
  File "PETSc/petscsnes.pxi", line 261, in petsc4py.PETSc.SNES_Function (src/petsc4py.PETSc.c:33328)
  File "/Users/matak/firedrake/lib/python2.7/site-packages/firedrake/solving_utils.py", line 216, in form_function
    form_compiler_parameters=problem.form_compiler_parameters)
  File "/Users/matak/firedrake/lib/python2.7/site-packages/firedrake/assemble.py", line 81, in assemble
    inverse=inverse, mat_type=mat_type, appctx=appctx)
  File "<decorator-gen-295>", line 2, in _assemble
  File "/Users/matak/firedrake/lib/python2.7/site-packages/firedrake/utils.py", line 62, in wrapper
    return f(*args, **kwargs)
  File "/Users/matak/firedrake/lib/python2.7/site-packages/firedrake/assemble.py", line 120, in _assemble
    inverse=inverse)
  File "/Users/matak/firedrake/lib/python2.7/site-packages/firedrake/tsfc_interface.py", line 192, in compile_form
    number_map).kernels
  File "/Users/matak/firedrake/lib/python2.7/site-packages/pyop2/caching.py", line 198, in __new__
    obj = make_obj()
  File "/Users/matak/firedrake/lib/python2.7/site-packages/pyop2/caching.py", line 188, in make_obj
    obj.__init__(*args, **kwargs)
  File "/Users/matak/firedrake/lib/python2.7/site-packages/firedrake/tsfc_interface.py", line 112, in __init__
    tree = tsfc_compile_form(form, prefix=name, parameters=parameters)
  File "/Users/matak/firedrake/lib/python2.7/site-packages/tsfc/driver.py", line 43, in compile_form
    kernels.append(compile_integral(integral_data, fd, prefix, parameters))
  File "/Users/matak/firedrake/lib/python2.7/site-packages/tsfc/driver.py", line 83, in compile_integral
    integration_dim, entity_ids = lower_integral_type(fiat_cell, integral_type)
  File "/Users/matak/firedrake/lib/python2.7/site-packages/tsfc/driver.py", line 267, in lower_integral_type
    basedim, extrdim = dim
TypeError: 'int' object is not iterable


On 10 Oct 2016, at 18:33, Colin Cotter <colin.cotter@imperial.ac.uk> wrote:

OK, I will try to discuss this with Onno on Thursday once he has finished being Examiner In Chief.

cheers
--cjc

On 10 October 2016 at 18:29, Mitchell, Lawrence <lawrence.mitchell@imperial.ac.uk> wrote:

> On 10 Oct 2016, at 18:19, Colin Cotter <colin.cotter@imperial.ac.uk> wrote:
>
> OK, this is the problem then - you need to find an appropriate preconditioner.
>
> You need to start by finding an appropriate preconditioner for the system without the R space part.
>
> Lawrence: once that is done, is there anything special to do to incorporate it into the system with the R space part [asking because you seem to have thought about this previously], or do we just recommend block preconditioning in this case?

I think you could use block first.  It's easier.  Otherwise I think the firedrake webpages sketch how to do sherman-morrison.

Lawrence
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