Kuala, Lumpur, Malaysiam, 3rd International Multidisciplinary Conference on Education, Engineering and Social Sciences, Kuala-Lumpur, Malezya, 26 Kasım 2022, (Tam Metin Bildiri)
For the online hierarchical scheduling problem on two parallel machines, the objective is to maximize the minimum machine load. When the processing times are bounded by an interval [1, alpha], Luo and Xu [8] designed an optimal algorithm with a competitive ratio of 1 + alpha based on the threshold method. In this paper, we propose a simpler optimal online algorithm based on modified list scheduling.