[petsc-dev] ParMETIS change

Balay, Satish balay at mcs.anl.gov
Wed Sep 13 09:07:31 CDT 2017

What errors do you get? The primary code change was to use real_t instead of PetscReal in calls to parmetis.

The change was done to make parmetis built by petsc be same as default parmetis that others/distros might build.

And this enables consistent usage from quad build of petsc.

I can add –download-metis-double or similar option to configure – if useful.


From: Eric Chamberland<mailto:Eric.Chamberland at giref.ulaval.ca>
Sent: Wednesday, September 13, 2017 8:41 AM
To: petsc-dev<mailto:petsc-dev at mcs.anl.gov>
Subject: [petsc-dev] ParMETIS change


having trouble to compile our code with PETSc-master new defaults
options for PARMEtis.

Parmetis was using double precision before...

By curiosity, is there a big performance gain to use float?



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