logging now only includes the MPI rank if there are >1 processes
logging now only includes the MPI rank if there are >1 processes

emjotde/amunn,emjotde/amunmt,marian-nmt/marian-train,marian-nmt/marian-train,emjotde/amunn,marian-nmt/marian-train,emjotde/Marian,amunmt/marian,marian-nmt/marian-train,emjotde/amunn,amunmt/marian,amunmt/marian,emjotde/amunmt,marian-nmt/marian-train,emjotde/amunn,emjotde/amunmt,emjotde/Marian,emjotde/amunmt