[petsc-users] Number of mallocs during Maximum nonzeros in any row

Barry Smith bsmith at mcs.anl.gov
Thu Aug 25 15:54:37 CDT 2011


  Unfortunately on some systems output from different processes get intermixed making it hard to read. It looks like the 12 is associated with the Max nonzeros per row here so you are ok.

   Barry

On Aug 25, 2011, at 3:49 PM, Dominik Szczerba wrote:

> I am profiling my application aiming to support a few grid types. I am
> getting the expected messages, like:
> 
> MatAssemblyEnd_SeqAIJ(): Number of mallocs during MatSetValues() is 0
> 
> or
> 
> [1] MatAssemblyEnd_SeqAIJ(): Matrix size: 15 X 15; storage space: 0
> unneeded,171 used
> 
> but in some cases, and not other, I see:
> 
> [0] MatAssemblyEnd_SeqAIJ(): Number of mallocs during Maximum nonzeros
> in any row is 12
> 
> What is it and does it indicate inaccurate calculation of d_nnz/o_nnz?
> 
> Many thanks,
> Dominik



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