The running times reported in Table 2 are relatively small even for large size problems. Note that even for the largest problemsf solved here (200 jobs and maximum processing time of 100), the average running time was 18.7 seconds, and the worst case running time did not exceed 22.6 s. As expected, the running time increases significantly as a function of and . On the other hand, the tightness factor had only minor effect on the results. In conclusion, our proposed DP performs well for all the combinations of the parameters considered in this study, and thus appears to be efficient for most practical settings.