On Sun, Oct 26, 2008 at 8:13 AM, Evan Lezar <[EMAIL PROTECTED]> wrote: > > > On Sun, Oct 26, 2008 at 2:41 PM, Garth N. Wells <[EMAIL PROTECTED]> 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).
There is aleady an elegant mechanism for controlling this, namely the communicator. Every PETSc object has a communicator, thus determining how many processes participate. Why make up another, less powerful mechanism? Matt > 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 >>> >>> >>> ------------------------------------------------------------------------ >>> >>> _______________________________________________ >>> DOLFIN-dev mailing list >>> [email protected] >>> http://www.fenics.org/mailman/listinfo/dolfin-dev >> > > > _______________________________________________ > DOLFIN-dev mailing list > [email protected] > http://www.fenics.org/mailman/listinfo/dolfin-dev > > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener _______________________________________________ DOLFIN-dev mailing list [email protected] http://www.fenics.org/mailman/listinfo/dolfin-dev
