Infinite horizon asymptotic average optimality for large-scale parallel server networks
Infinite horizon asymptotic average optimality for large-scale parallel server networks
复制标题
大规模并行服务器网络的无限水平渐近平均最优性
DOI:
10.1016/j.spa.2018.03.005
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发表时间:
2018
影响因子:
1.4
通讯作者:
Pang, Guodong
中科院分区:
文献类型:
--
作者:
Arapostathis, Ari;Pang, Guodong
We study infinite-horizon asymptotic average optimality for parallel server networks with multiple classes of jobs and multiple server pools in the Halfin–Whitt regime. Three control formulations are considered: (1) minimizing the queueing and idleness cost, (2) minimizing the queueing cost under constraints on idleness at each server pool, and (3) fairly allocating the idle servers among different server pools. For the third problem, we consider a class ofbounded-queue, bounded-state(BQBS) stable networks, in which any moment of the state is bounded by that of the queue only (for both the limiting diffusion and diffusion-scaled state processes). We show that the optimal values for the diffusion-scaled state processes converge to the corresponding values of the ergodic control problems for the limiting diffusion. We present a family of state-dependent Markov balanced saturation policies (BSPs) that stabilize the controlled diffusion-scaled state processes. It is shown that under these policies, the diffusion-scaled state process is exponentially ergodic, provided that at least one class of jobs has a positive abandonment rate. We also establish useful moment bounds, and study the ergodic properties of the diffusion-scaled state processes, which play a crucial role in proving the asymptotic optimality.
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影响因子:
1.2
作者:
J. Dai;Tolga Tezcan
通讯作者:
Tolga Tezcan
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
A. Stolyar
通讯作者:
A. Stolyar
影响因子:
1.2
作者:
Alexander Stolyar
通讯作者:
Alexander Stolyar
DOI:
--
发表时间:
2016
期刊:
arXiv.org
影响因子:
--
作者:
A. Arapostathis;G. Pang
通讯作者:
G. Pang
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
A. Stolyar;E. Yudovina
通讯作者:
E. Yudovina