Dear mpi team / users: To get a mpi with 64-bit integers (linux system: ubuntu 12.04) I invoked the following configuration options:
./configure --prefix=/opt/openmpi CXX=icpc CC=icc F77=ifort FC=ifort FFLAGS=-i8 FCFLAGS=-i8 The subsequent make/install scripts apparently went through smoothly, but when I check ompi_info -a | grep 'Fort integer size' the result reads: Fort integer size: 4 What went awry? For all hints and suggestions many thanks in advance, Hans H.
