On Wed, 14 Dec 2011, John Fettig wrote: > On Tue, Sep 20, 2011 at 12:58 PM, Barry Smith <bsmith at mcs.anl.gov> wrote: > > > > > On Sep 20, 2011, at 11:54 AM, Brad Aagaard wrote: > > > > > I tried running a PyLith simulation using the sacusp preconditioner > > rather than ml. If I have the mat_type set to mpiaijcusp, I get an error > > message that sacusp preconditioner only works with CUSP matrices. I checked > > sacusp.c and the code checks to make sure the mat_type is seqaijcusp. > > > > Since the sacusp preconditioner is no MPI parallel it cannot deal with > > MPI matrices. ML is a truly (MPI) parallel multi-level preconditioner so it > > is not really interchangable with sacusp. > > > > You can use block Jacobi preconditioning -pc_type bjacobi -sub_pc_type > > sacusp with sacusp on each block. > > > Hi Barry, > > Sorry to dig up a very old thread, but I just tried your suggestion of > using block jacobi with sacusp on the blocks and I can't get it to work. > For example, I run src/ksp/ksp/examples/tutorials/ex2.c with: > > mpirun -np 2 ./ex2 -ksp_type cg -pc_type bjacobi -sub_pc_type sacusp > -mat_type mpiaijcusp -vec_type mpicusp > > and it still bombs on line 139 of sacusp.cu because the vector type is not > VECSEQCUSP. What am I doing wrong?
Looks like VecDuplicate() -> VecDuplicate_MPICUSP() is returning a 'mpi' Vec instead of 'mpicusp' Vec. [This is a bug?] will check.. Satish
