Before revision:  On the basis of BOPS, we propose a new Roofline performance model for DC computing , which we call DC-Roofline model, with which we optimize DC workloads with the improvement varying from 119\% to 325\% .
After revision:  On the basis of BOPS, we propose a new Roofline performance model for DC computing . In our experiments, three typical systems equipped with different Intel processors are evaluated using 17 typical DC workloads. The bias between the BOPS gap and the average user-perceived performance gap is no more than 11\%, and the BOPS efficiency of the Sort workload achieves 32\%. We optimize the typical DC kernel workloads under the guidance of the DC-Roofline model, with which we optimize DC workloads with the improvement varying from 119\% to 325\% .