On 2/23/23 07:37, 'yy.wayne' via deal.II User Group wrote:
**
I'm making a big mistake then. I thought step-4 and step-40's only difference
are parallel
distributed triangulation and handing ghost dofs.
I don't know what you're doing in your modification of step-4, so I really
can't tell. But step-4 itself has no notion that there are other processors.
Unless you modified it extensively, every process will build and store the
entire matrix, and I assume that you are also only calling MUMPS and SuperLUU
with that entire matrix.
But of course I don't know -- I don't have the code you are running.
Best
W>
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Wolfgang Bangerth email: bange...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/
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