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dg-poisson demo in parallel

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I tried to run the dg-poisson cpp demo in parallel with:

mpirun -n 2 ./demo_dg-poisson

For me the result seems to have some issues. strange result

Is it possible that this demo is not suitable to run in parallel, or am I doing something wrong?

asked Aug 15, 2015 by str FEniCS User (1,600 points)

1 Answer

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Best answer

DG works in parallel since version 1.5.0. You probably have an older version?

answered Aug 15, 2015 by mikael-mortensen FEniCS Expert (29,340 points)
selected Oct 1, 2015 by str

I have the 1.5.0 version according to:
$ dolfin-version

I tried to run the python version and had the same issue unfortunately.

commented Aug 15, 2015 by str FEniCS User (1,600 points)

It works for me on 1.6.0. Perhaps it's just the plotter? Are you getting correct values for the vector norm?

commented Aug 15, 2015 by mikael-mortensen FEniCS Expert (29,340 points)

The vector norm is correct, however paraview is not able to open the pvd file so it is maybe not just the plotter. No such problem occurs with the other non-dg demos in parallel.

commented Aug 15, 2015 by str FEniCS User (1,600 points)

I suppose my problem is related to this issue: https://bitbucket.org/fenics-project/dolfin/issues/551/screwed-up-geometry-of-ghosted-plots

commented Aug 17, 2015 by str FEniCS User (1,600 points)
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