Cost-Effective Task Scheduling for Collaborative Cross-Edge Analytics

doi:10.12142/ZTECOM.202102003

ZTE Communications ›› 2021, Vol. 19 ›› Issue (2): 11-19.DOI: 10.12142/ZTECOM.202102003

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Cost-Effective Task Scheduling for Collaborative Cross-Edge Analytics

ZHAO Kongyange¹, GAO Bin², ZHOU Zhi¹()

^1.Sun Yat-sen University, Guangzhou 510275, China
^2.National University of Singapore, Singapore 119077, Singapore

Received:2021-04-09 Online:2021-06-25 Published:2021-07-27
About author:ZHAO Kongyange received the B.E. degree from the South China University of Technology, China in 2020. He is currently pursuing his master’s degree in Sun Yat-sen University, China. His research interests include edge computing, edge intelligence, and serverless computing.|GAO Bin is now a research assistant of School of Computing in National University of Singapore (NUS). Before this, he received the master’s degree and bachelor’s degree from Huazhong University of Science and Technology (HUST), China in 2017 and 2020, respectively. His research interests include operation system, mobile edge computing, cloud computing, and geo-distributed data analytics.|ZHOU Zhi (zhouzhi9@mail.sysu.edu.cn) received the B.S., M.E., and Ph.D. degrees in 2012, 2014, and 2017, respectively, all from the School of Computer Science and Technology at Huazhong University of Science and Technology (HUST), China. He is currently an associate professor in the School of Computer Science and Engineering at Sun Yat-sen University, China. In 2016, he was a visiting scholar at University of Goettingen, Germany. He was nominated for the 2019 CCF Outstanding Doctoral Dissertation Award, the sole recipient of the 2018 ACM Wuhan & Hubei Computer Society Doctoral Dissertation Award, and a recipient of the Best Paper Award of IEEE UIC 2018. His research interests include edge computing, cloud computing, and distributed systems.
Supported by:
the National Natural Science Foundation of China(61802449);the Guangdong Natural Science Funds(2021A1515011912)

Abstract

Abstract:

Collaborative cross-edge analytics is a new computing paradigm in which Internet of Things (IoT) data analytics is performed across multiple geographically dispersed edge clouds. Existing work on collaborative cross-edge analytics mostly focuses on reducing either analytics response time or wide-area network (WAN) traffic volume. In this work, we empirically demonstrate that reducing either analytics response time or network traffic volume does not necessarily minimize the WAN traffic cost, due to the price heterogeneity of WAN links. To explicitly leverage the price heterogeneity for WAN cost minimization, we propose to schedule analytic tasks based on both price and bandwidth heterogeneities. Unfortunately, the problem of WAN cost minimization underperformance constraint is shown non-deterministic polynomial (NP)-hard and thus computationally intractable for large inputs. To address this challenge, we propose price- and performance-aware geo-distributed analytics (PPGA) , an efficient task scheduling heuristic that improves the cost-efficiency of IoT data analytic jobs across edge datacenters. We implement PPGA based on Apache Spark and conduct extensive experiments on Amazon EC2 to verify the efficacy of PPGA.

Key words: collaborative cross-edge analytics, Internet of Things, task scheduling

ZHAO Kongyange, GAO Bin, ZHOU Zhi. Cost-Effective Task Scheduling for Collaborative Cross-Edge Analytics[J]. ZTE Communications, 2021, 19(2): 11-19.

Figures/Tables 8

Figure 1 Illustration of collaborative cross-edge analytics

Table 1 Price heterogeneity (in US dollar per GB) of outgoing WAN bandwidth usage at different regions of Amazon EC2

Location	Price
Frankfurt	0.02
Iceland	0.02
London	0.02
Northern California	0.02
Northern Virginia	0.02
Ontario	0.02
Oregon	0.02
Tokyo	0.02
Mumbai	0.086
Seoul	0.09
Singapore	0.09
Sydney	0.09
Sao Paulo	0.16

Figure 2 Usage price of outgoing WAN bandwidth versus the average outgoing WAN bandwidth of 5 Amazon EC2 regions

Table 2 Pair-wise bandwidth (in Mbit/s) between 5 different EC2 regions

City	Singapore	Oregon	Sydney	Sao Paulo	Mumbai
Singapore	46 028.8	116	140	63.5	390
Oregon	123	46 284.8	137	110	100
Sydney	144	124	46 592	69.0	106
Sao Paulo	66.6	109	74.5	46 899.2	79.3
Mumbai	390	103	106	73.7	46 694.4

Table 3 Price (in US dollar per GB) of outgoing WAN bandwidth usage

City	Singapore	Oregon	Sydney	Sao Paulo	Mumbai
Price	0.09	0.02	0.14	0.16	0.086

Figure 3 Data transfer costs of WordCount， PageRank and TeraSort

Figure 4 WordCount, PageRank and TeraSort’s shuffle bandwidth usage across datacenters

Figure 5 Application completion times of WordCount, PageRank and TeraSort

References 13

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Cost-Effective Task Scheduling for Collaborative Cross-Edge Analytics

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