Accelerating Performance Inference over Closed Systems by Asymptotic Methods
Accelerating Performance Inference over Closed Systems by Asymptotic Methods
复制标题
通过渐近方法加速封闭系统的性能推理
DOI:
10.1145/3143314.3078514
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Casale G
中科院分区:
文献类型:
--
作者:
Casale G
Recent years have seen a rapid growth of interest in exploiting monitoring data collected from enterprise applications for automated management and performance analysis. In spite of this trend, even simple performance inference problems involving queueing theoretic formulas often incur computational bottlenecks, for example upon computing likelihoods in models of batch systems. Motivated by this issue, we revisit the solution of multiclass closed queueing networks, which are popular models used to describe batch and distributed applications with parallelism constraints. We first prove that the normalizing constant of the equilibrium state probabilities of a closed model can be reformulated exactly as a multidimensional integral over the unit simplex. This gives as a by-product novel explicit expressions for the multiclass normalizing constant. We then derive a method based on cubature rules to efficiently evaluate the proposed integral form in small and medium-sized models. For large models, we propose novel asymptotic expansions and Monte Carlo sampling methods to efficiently and accurately approximate normalizing constants and likelihoods. We illustrate the resulting accuracy gains in problems involving optimization-based inference.
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DOI:
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1986
期刊:
JACM
影响因子:
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作者:
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通讯作者:
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1994
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Performance evaluation (Print)
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2001
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PERV
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期刊:
Performance evaluation (Print)
影响因子:
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通讯作者:
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