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
