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arXiv · 1808.02838

On the Effect of Task-to-Worker Assignment in Distributed Computing Systems with Stragglers

Amir Behrouzi-Far·Emina Soljanin
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Abstract

We study the expected completion time of some recently proposed algorithms for distributed computing which redundantly assign computing tasks to multiple machines in order to tolerate a certain number of machine failures. We analytically show that not only the amount of redundancy but also the task-to-machine assignments affect the latency in a distributed system. We study systems with a fixed number of computing tasks that are split in possibly overlapping batches, and independent exponentially distributed machine service times. We show that, for such systems, the uniform replication of non- overlapping (disjoint) batches of computing tasks achieves the minimum expected computing time.

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BibTeXRIS

Amir Behrouzi-Far, Emina Soljanin. 2018-08-08. On the Effect of Task-to-Worker Assignment in Distributed Computing Systems with Stragglers. https://arxiv.org/abs/1808.02838

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