What are you doing with the matrix?

  We don't have a diagonal matrix but it would be easy to add such a beast if 
it was performance critical, which it probably isn't.

  Barry




> On Feb 14, 2018, at 3:57 PM, Fande Kong <fdkong...@gmail.com> wrote:
> 
> Hi All,
> 
> If  a matrix is always diagonal, what a good way to represent the matrix?  
> Still MPIAIJ, MPIBAIJ? Can we have a specific implementation for this?
> 
> 
> Fande,

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