[petsc-users] Configure Mumps with 64-bit integers

[Najib Alia]

Hello,

I am getting an "INFOG(1) = -51 integer overflow" error from Mumps
because the linear system I am solving is very big. I have tried to
configure Mumps in a full 64-bit integer version using

===============================================

./configure --with-64-bit-indices --with-cc=gcc --with-cxx=g++
--with-fc=gfortran --with-debugging=0 COPTFLAGS='-O3 -march=native
-mtune=native' CXXOPTFLAGS='-O3 -march=native -mtune=native'
FOPTFLAGS='-O3 -march=native -mtune=native' --download-fblaslapack
--download-openmpi --download-scalapack --download-mumps
--download-metis --download-suitesparse --download-parmetis

===============================================

but I obtain the following error:

*******************************************************************************
UNABLE to CONFIGURE with GIVEN OPTIONS    (see configure.log for details):
-------------------------------------------------------------------------------
Cannot use MUMPS with 64 bit integers, it is not coded for this capability
*******************************************************************************

Is there a way to use Mumps with 64-bit integers through Petsc? or to
use the "selective 64-bit integer feature"?

Thank you ahead.

Alia