[Trilinos-Users] [EXTERNAL] 64bit indices in Hypre, Superlu-Dist and Metis/Parmetis

[Klinvex, Alicia Marie]

Hello Denis,

Since Epetra isn't templated, I'm not sure I see a way to support 64bit ints in that hypre interface.  (CCed Mark in case he has some ideas.)  We should be able to support it in the tpetra-based interface though, if you're interested in that one.

Best wishes,
Alicia

-----Original Message-----
From: Trilinos-Users [mailto:trilinos-users-bounces at trilinos.org] On Behalf Of Denis Davydov
Sent: Thursday, February 23, 2017 5:14 AM
To: trilinos-users <trilinos-users at trilinos.org>
Subject: [EXTERNAL] [Trilinos-Users] 64bit indices in Hypre, Superlu-Dist and Metis/Parmetis

Dear all,

I am building a stack (with 64bit indices) composed of PETSc, Trilinos, Superlu-Dist, Metis, etc and came across the following compiler error in EpetraExt:

/home/user/spack/var/spack/stage/trilinos-12.10.1-kgdtcmcwce6xhetukputhnh2f7v4sljf/Trilinos-trilinos-release-12-10-1/packages/epetraext/src/hypre/EpetraExt_HypreIJMatrix.cpp:91:96: error: cannot convert ‘int*’ to ‘HYPRE_Int* {aka long long int*}’ for argument ‘3’ to ‘HYPRE_Int HYPRE_ParCSRMatrixGetRow(HYPRE_ParCSRMatrix, HYPRE_Int, HYPRE_Int*, HYPRE_Int**, HYPRE_Complex**)’
     ierr += HYPRE_ParCSRMatrixGetRow(ParMatrix_, i+MyRowStart_, &num_entries, &indices, &values);
                                                                                                ^

That’s of course because if PETSc is built with 64bit ints, then Hypre have to be also built accordingly.

So what are the requirements from Trilinos side on those dependencies? Can it not be built against Hypre or Superlu-Dist when those packages are configured with —enable-biginit and -D_LONGINT, respectively?
Or is it a bug in EpetraExt?

Regards,
Denis.

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