On Jun 22, 2011, at 9:02 AM, John Fettig wrote: > On Wed, Jun 22, 2011 at 9:56 AM, Matthew Knepley <knepley at gmail.com> wrote: >> It is compressed, so it only has columns that have a nonzero. > > Thanks for answering so quickly. I had just assumed that it would > logically still report sizes that added up to the global column size > so I was confused.
What do you mean "report"? The sequential matrix that represents the off-diagonal part of the matrix actually does not contain the "zero columns" so does have fewer columns and hence the smaller number. Barry > > John
