Fair Scheduling via Iterative Quasi-Uniform Sampling

Fair Scheduling via Iterative Quasi-Uniform Sampling
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DOI:
10.1137/1.9781611974782.171
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发表时间:
2017-01
期刊:
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影响因子:
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通讯作者:
Sungjin Im;Benjamin Moseley
Sungjin Im;Benjamin Moseley
中科院分区:
其他
文献类型:
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作者:
Sungjin Im;Benjamin Moseley

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在本文中,我们考虑最小化的lk-范数的流时间在一台机器上离线使用抢占式调度,k ≥ 1。我们展示了该问题的第一个O(1)近似,改进了Bansal和Pruhs(FOCS 09和SICOMP 14)以前的最佳O(log log P)近似,其中P是最大作业大小与最小作业大小之比。我们的主要技术成分是一种新的准均匀采样和迭代舍入的组合,这是在其本身的权利感兴趣。
In the paper we consider minimizing the lk-norms of flow time on a single machine offline using a preemptive scheduler for k ≥ 1. We show the first O(1)-approximation for the problem, improving upon the previous best O(log log P)-approximation by Bansal and Pruhs (FOCS 09 and SICOMP 14) where P is the ratio of the maximum job size to the minimum. Our main technical ingredient is a novel combination of quasi-uniform sampling and iterative rounding, which is of interest in its own right.