Bug#1005951: nwchem (ARMCI) fails in multi-node execution with openmpi

[Drew Parsons]

I mean
  mpirun -H node-1:16,node-2:16 -n 32 nwchem water.nw
or
  mpirun -H node-1:16,node-2:16 -N 16 nwchem water.nw
for the triggering examples (-N setting processes per node, -n sets 
total number of processes).