realm: disable migration for barriers with reductions
realm: disable migration for barriers with reductions

StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,sdalton1/legion,sdalton1/legion,StanfordLegion/legion,sdalton1/legion,StanfordLegion/legion,StanfordLegion/legion,sdalton1/legion,StanfordLegion/legion,StanfordLegion/legion,sdalton1/legion,sdalton1/legion