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Towards load balancing support for I/O-intensive parallel jobs in a cluster of workstations

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4 Author(s)
Xiao Qin ; Dept. of Comput. Sci. & Eng., Univ. of Nebraska-Lincoln, Lincoln, NE, Netherlands ; Hong Jian ; Yifeng Zhu ; Swanson, D.R.

While previous CPU- or memory-centric load balancing schemes are capable of achieving the effective usage of global CPU and memory resources in a cluster system, the cluster exhibits significant performance drop under I/O-intensive workload conditions due to the imbalance of I/O load. To tackle this problem, we have developed two simple yet effective I/O-aware load-balancing schemes, which make it possible to balance I/O load by assigning I/O intensive sequential and parallel jobs to nodes with light I/O loads. Moreover, the proposed schemes judiciously take into account both CPU and memory load sharing in the cluster, thereby maintaining a high performance for a wide spectrum of workload. Using a set of real I/O-intensive parallel applications in addition to synthetic parallel jobs, we show that the proposed schemes consistently outperform the existing non-I/O aware load-balancing schemes for a diverse set of workload conditions. Importantly, the performance improvement becomes much more pronounced when the applications are I/O-intensive.

Published in:

Cluster Computing, 2003. Proceedings. 2003 IEEE International Conference on

Date of Conference:

1-4 Dec. 2003