Endpoint Communication Contention-Aware Cloud Workflow Scheduling

Quanwang Wu, Meng Chu Zhou, Junhao Wen

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Cloud platforms have recently become a popular target execution environment for numerous workflow applications. Hence, effective workflow scheduling strategies in cloud environments are in high demand. However, existing scheduling algorithms are grounded on an idealized target platform model where virtual machines are fully connected, and all communications can be performed concurrently. A significant aspect neglected by them is endpoint communication contention when executing workflows, which has a large impact on workflow makespan. This article investigates how to incorporate contention awareness into cloud workflow scheduling and proposes a new practical scheduling model. Endpoint communication contention-aware List Scheduling Heuristic (ELSH) is designed to minimize workflow makespan. It uses a novel task ranking property and schedules data communications to communication resources besides scheduling tasks to computing resources. Moreover, a rescheduling technique is employed to improve the schedule. In experiments, ELSH is evaluated against the traditional contention-oblivious list scheduling algorithm, which is adapted to address contention during execution in practice. The experimental results reveal that ELSH performs more efficaciously compared with the adapted traditional ones.

Original languageEnglish (US)
JournalIEEE Transactions on Automation Science and Engineering
StateAccepted/In press - 2021
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


  • Bandwidth
  • Cloud computing
  • Cloud computing
  • Computational modeling
  • directed acyclic graph
  • endpoint communication contention
  • Job shop scheduling
  • list scheduling
  • Processor scheduling
  • Servers
  • Task analysis
  • workflow scheduling.


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