dolfin team mailing list archive

["Garth N. Wells" <gnw20@xxxxxxxxx>]

Anders Logg wrote:
> On Tue, Feb 23, 2010 at 10:38:38PM +0000, Garth N. Wells wrote:
>>
>> Marie Rognes wrote:
>>> Am I the only one getting the following error with a fresh dolfin?
>>>
>> I've commented out the offending function. I don't see why it was added.
>>
>> Garth
> 
> It's in the commit log. :-)
> 

Where's the implementation? I don't see why it was added without an
implementation.

I also think that this isn't a good idea from the la standpoint,
especially in parallel.

Garth

> The function ident_zeros inserts 1 in the diagonal in all rows where
> all entries are zero. This can be used to constrain inactive dofs.
> 
> The best option for this would be to implement support for restricted
> function spaces (where dofs in some regions are inactive) but it's
> currently broken.
> 
> --
> Anders
> 
> 
> 
>>> meg@localhost ~ $ python
>>> Python 2.6.4 (r264:75706, Dec  7 2009, 23:01:27)
>>> [GCC 4.3.2] on linux2
>>> Type "help", "copyright", "credits" or "license" for more information.
>>>>>> import dolfin
>>> Traceback (most recent call last):
>>>  File "<stdin>", line 1, in <module>
>>>  File
>>> "/home/meg/local/lib64/python2.6/site-packages/dolfin/__init__.py", line
>>> 13, in <module>
>>>    import dolfin.cpp as cpp
>>>  File "/home/meg/local/lib64/python2.6/site-packages/dolfin/cpp.py",
>>> line 6, in <module>
>>>    import _cpp
>>> ImportError: /home/meg/local/lib/libdolfin.so.0: undefined symbol:
>>> _ZN6dolfin13GenericMatrix11ident_zerosEv
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