Before revision:  Results are presented demonstrating high per-node performance and near-ideal parallel scalability with rates of more than nine quadrillion elementwise comparisons achieved per second with the latest optimized code on the ORNL Titan system, this being over 3,000X faster than rates  using other codes and platforms as reported in the literature.
After revision:  Results are presented demonstrating high per-node performance and near-ideal parallel scalability with rates of more than nine quadrillion elementwise comparisons achieved per second with the latest optimized code on the ORNL Titan system, this being orders of magnitude faster than rates using other codes and platforms as reported in the literature.