On 01/12/2015 04:29 PM, Matthew Knepley wrote:
Fieldsplit block preconditioners can be used on this type of matrix,
but success obviously depends on the
analytic character of the operators. In particular, if we assume that
we have great PCs for the diagonal,
then B is the most important variable, and we need to know what the
Schur complement
Dear Matt,
Thanks, I have a bit of difficult time understanding what you mean by
¨great PCs¨ for the diagonal? Could you please rephrase it?
Thanks in advance.
Umut
