nonzeros of a matrix

[Margot Summer]

Thanks. But can we find out this info inside the code (like the way we get the number of iterations of ksp)?  Also, for many subpc's, e.g. using bjacobi, -ksp_view does not print out every block.  

Margot
 
Satish Balay <balay at mcs.anl.gov> wrote: You can run the code with -mat_view_info [to get the matrix info] and
-ksp_view - to get the info about the solvers [which include some
details about the ilu preconditioner]

Satish

On Fri, 11 Aug 2006, Margot Summer wrote:

> Hi,
> 
> Is there a simple way to get the number of nonzeros of
> a matrix? Further, how to find out the information
> about a matrix object in KSP/PC, e.g., the number of
> nonzeros of the preconditioner, or the number of
> nonzeros of the ilu(icc) factor? Thanks,
> 
> Margot 
> 
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