双核处理器: 合队列: 过渡性性能评估.
Shaik Salma1, Garimella Ramamurthy1
1Department of CSE, Mahindra University, Bahadurpalli, 500043, India.
Heliyon
|September 4, 2023
概括
这项研究模型将双核处理器中的队列结合起来,使用准生死过程. 它引入了一种新的高效过渡分析方法,使得高性能计算系统能够更好地估计性能和设计自适应路由算法.
科学领域:
- 计算机科学 计算机科学
- 排队理论 排队理论
- 绩效分析 绩效分析
背景情况:
- 高性能计算 (HiPC) 系统使用多核处理器,在普遍计算中常见的双核处理器.
- 传统的队列分析假设独立的队列,这对于像加入最短队列 (JSQ) 这样的自适应路由策略是不现实的.
- 对合队列的平衡分析不能为具有自适应路由的系统提供准确的性能测量.
研究的目的:
- 在双核处理器中使用近乎出生和死亡 (QBD) 过程建模合队列.
- 为了证明直接在时间域中计算QBD过程的短暂概率分布的可操作性.
- 为了实现高效的短暂性能分析和设计最佳的自适应路由算法.
主要方法:
- 用近乎出生和死亡 (QBD) 过程建模合队列.
- 计算时间域中的矩阵指数来进行瞬态分析,克服拉普拉斯域方法的局限性.
- 使用队列长度的短暂概率质量函数来估计性能指标.
主要成果:
- 确定了合 QBD 过程的平衡性能指标.
- 展示了一种新的,有效的方法来计算时间域中的QBD过程的短暂概率分布.
- 可以估计过渡性绩效指标,包括预期的队列长度,平均延迟和尾部分布.
结论:
- 拟议的QBD模型准确地表示双核处理器中的合队列.
- 对矩阵指数的直接时间域计算能够有效地进行过渡分析,从而改善性能评估.
- 这项研究有助于设计改进的自适应路由算法,以提高系统性能.
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