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[Gideon Simpson <grs2103@xxxxxxxxxxxx>]

I have a sparse matrix that I'm constructing and beforehand I'm  
setting the sparsity pattern and then I will populate the matrix.   
Obviously dolfin is not going to handle everything so I ask this:

Will the "right" way to do this, in parallel, be to separately use  
the underlying PETSc routines for setting the values using  
MatGetOwnershipRange and MatSetValues?

Also, after the appropriate entries in sparsity_pattern are set,  
should I then call sparsity_pattern.apply() ?


-gideon