ffc team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Tue, Feb 02, 2010 at 12:06:35AM +0100, Anders Logg wrote:
> The unit tests are taking a very long time. Would it be possible to
> add some printing along the way so it doesn't look like it's stalling?
>
> Some regression tests are still failing. Can these be ignored and
> should we then update the references?

I get this when I run the unit tests now:

======================================================================
FAIL: Test evaluate basis agains FIAT.FiniteElement.tabulate().
----------------------------------------------------------------------
Traceback (most recent call last):
  File
  "/home/logg/work/src/fenics/ffc/ffc-main/test/unit/evaluate_basis/test.py",
  line 20, in testAgainsFiat
    self.assertEqual(error, 0, "Errors while testing evaluate_basis
    against FIAT, see fiat_errors.log for details")
AssertionError: Errors while testing evaluate_basis against FIAT, see
fiat_errors.log for details

And things like this in error.log:

-------------------------------------------------------------------------------
<CG3 on a <interval of degree 1>>
  evaluate_basis()
  error: 3.9999999632e-09 (tol: 1e-14)
  evaluate_basis_derivatives(), order = 2
  error: 1.42108547152e-14 (tol: 1e-14)
  evaluate_basis_derivatives(), order = 3
  error: 7.1054273576e-14 (tol: 1e-14)
-------------------------------------------------------------------------------

-------------------------------------------------------------------------------
<CG4 on a <interval of degree 1>>
  evaluate_basis()
  error: 4.9760000842e-09 (tol: 1e-14)
  evaluate_basis_derivatives(), order = 1
  error: 4.00000121914e-09 (tol: 1e-14)
  evaluate_basis_derivatives(), order = 2
  error: 3.33344019054e-09 (tol: 1e-14)
  evaluate_basis_derivatives(), order = 3
  error: 1.13686837722e-12 (tol: 1e-14)
  evaluate_basis_derivatives(), order = 4
  error: 1.09139364213e-11 (tol: 1e-14)
-------------------------------------------------------------------------------

So the tolerance might need to be increased. Something like 1e-8
should be ok.

I also get this:

*** FFC: Sorry, finite element of type "Brezzi-Douglas-Fortin-Marini"
are not supported by FIAT.
*** FFC: To get more information about this error, rerun FFC with
--debug.

I didn't think BDFM was supported by the new FIAT.

--
Anders

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