异构集群中计算能力的统计预测

R. C. Chiang, A. A. Maciejewski, A. Rosenberg, H. Siegel
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引用次数: 5

摘要

如果集群C1由平均速度比集群C2中的计算机更快的计算机组成,这是否意味着集群C1比集群C2更高效?如果集群C1中的计算机与集群C2中的计算机具有相同的平均速度,那么具有速度差异较大的计算机的计算机是否具有更高的生产力?在测量集群性能的正式框架内进行模拟实验以探索上述问题。仿真结果表明,平均速度和速度方差(当平均速度相等时)通常与集群的性能相关,但并非总是如此;这些语句在我们的模拟环境中进行了统计量化。此外,仿真结果还表明:(1)如果集群C1中的计算机的平均速度比集群C2中的计算机的平均速度快至少一个阈值,则C1比C2的生产率更高。(2)如果集群C1和C2中的计算机具有相同的平均速度,则当集群C1中的计算机的速度方差比集群C2中的计算机的速度方差至少高一个阈值时,C1比C2的生产效率更高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Statistical predictors of computing power in heterogeneous clusters
If cluster C1 consists of computers with a faster mean speed than the computers in cluster C2, does this imply that cluster C1 is more productive than cluster C2? What if the computers in cluster C1 have the same mean speed as the computers in cluster C2: is the one with computers that have a higher variance in speed more productive? Simulation experiments are performed to explore the above questions within a formal framework for measuring the performance of a cluster. Simulation results show that both mean speed and variance in speed (when mean speeds are equal) are typically correlated with the performance of a cluster, but not always; these statements are quantified statistically for our simulation environments. In addition, simulation results also show that: (1) If the mean speed of computers in cluster C1 is faster by at least a threshold amount than the mean speed of computers in cluster C2, then C1 is more productive than C2. (2) If the computers in clusters C1 and C2 have the same mean speed, then C1 is more productive than C2 when the variance in speed of computers in cluster C1 is higher by at least a threshold amount than the variance in speed of computers in cluster C2.
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