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
