dolfin team mailing list archive

["Evan Lezar" <evanlezar@xxxxxxxxx>]

On Sun, Oct 26, 2008 at 2:41 PM, Garth N. Wells <gnw20@xxxxxxxxx> wrote:

> Whether or not something is being run in parallel should be determined by
> the number of processes,
>
>  uint dolfin::MPI::num_processes()
>
> Garth
>

Yes, I am aware of that, but I want to have a bit more control over the
parallelisation.  What I want is a number of processes each solving an
independent eigenvalue system (actually I am doing a sweep in frequency for
an electromagnetic problem and each frequency point has its own
eigensystem).

I did send an earlier mail discussing this.

Any help with swig would be much appreciated.

Evan


> Evan Lezar wrote:
>
>> Hi
>>
>> I have added a constructor to PETScMatrix to allow me to control whether
>> the matrix is to be created in parallel or not.  The declarations are given
>> below
>>
>> /// Create empty matrix
>> explicit PETScMatrix(Type type=default_matrix);
>>
>> /// Create an empty matrix explicitly setting the parallel flag
>> explicit PETScMatrix(bool is_parallel, Type type=default_matrix);
>>
>> The idea is that I use
>>
>> S = PETScMatrix(False)
>> If I want to create a matrix that is local.  The problem is that swig
>> can't differentiate between Type and bool (and uint for the PETScMatrix(uint
>> M, uint N, Type type=default_matrix); constructor).  I have seen that it is
>> possible to rename PETScMatrix(bool) to PETScMatrix_bool(bool) for example
>> so that the python call would be
>>
>> S = PETScMatrix_bool(False),
>>
>> but I can't seem to get this working.  Any suggestions?
>>
>> Thanks
>> Evan
>>
>>
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>
>