[petsc-users] Error using Metis with PETSc installed with MUMPS

Victoria Rolandi victoria.rolandi93 at gmail.com
Tue Oct 31 22:30:56 CDT 2023


Hi,

I'm solving a large sparse linear system in parallel and I am using PETSc
with MUMPS. I am trying to test different options, like the ordering of the
matrix. Everything works if I use the *-mat_mumps_icntl_7 2  *or
*-mat_mumps_icntl_7
0 *options (with the first one, AMF, performing better than AMD), however
when I test METIS *-mat_mumps_icntl_7** 5 *I get an error (reported at the
end of the email).

I have configured PETSc with the following options:

--with-cc=mpiicc --with-cxx=mpiicpc --with-fc=mpiifort
 --with-scalar-type=complex --with-debugging=0 --with-precision=single
--download-mumps --download-scalapack --download-parmetis --download-metis

and the installation didn't give any problems.

Could you help me understand why metis is not working?

Thank you in advance,
Victoria

Error:

 ****** ANALYSIS STEP ********
 ** Maximum transversal (ICNTL(6)) not allowed because matrix is distributed
 Processing a graph of size:    699150 with      69238690 edges
 Ordering based on METIS
510522 37081376 [100] [10486 699150]
Error! Unknown CType: -1
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