PETSc sparsity

[Toby Young]

> If I understand you correctly, a trick we use for this is to use
> MatGetRow to get the sparcity pattern of each row (where you are
> applying BCs)

Neat trick. MatGetRow will give me the row of the matrix, so would then
need a little loop to examine the elements and proceed as you suggested;
am I right?

I guess there is no way to directly access the sparsity pattern then?

Thanks for the suggestion.

Best,
	Toby


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Toby D. Young (Adiunkt)
Department of Computational Science
Institute of Fundamental Technological Research
Polish Academy of Science
Room 206, ul. Swietokrzyska 21
00-049 Warszawa, POLAND