Ananya:

I am running  "cmake ." and "make", followed by "mpirun -np 4 ./step-17 " in the step directory.
Mpirun is working on step-40 and step-42, but not on step-17 and step-18.

That makes sense, because steps 40 and 42 do not use METIS.


I have also installed Dealii 9.5 using Candii. In this installation I am able to mpirun step-17 and step-18. Though I was preferring the spack installation because it installs,  by default,  most of
the dependencies required for running Dealii tutorials.

I don't know what to suggest. If spack miscompiles METIS, you cannot use it. It is, fortunately, not widely used in deal.II -- only the parallel::shared::Triangulation class uses it.

Best
 W.

--
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Wolfgang Bangerth          email:                 bange...@colostate.edu
                           www: http://www.math.colostate.edu/~bangerth/


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