Dear PETSc developers, I use PETSc and SLEPC to solve generalized eigen problems. When solving an interval eigen problem with matrix size about 5 million, i got the error message: "product of two integer xx xx overflow, you must ./configure PETSc with --with-64-bit-indices for the case you are running".
I use some prebuilt third-party packages when building PETSc, namely OpenBLAS, METIS, ParMETIS and SCALAPACK. I wonder should i also use 64-bit prebuilt packages when configure PETSc with the --with-64-bit-indices flag? How about the MUMPS and MPI? Do i have to also use the b4-bit version? Look forward for your reply, thanks. Xiaofeng
