Methodologies for Particle Transport Simulation and Their Application to Nuclear Systems

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دانلود مقاله Cloud-aware data intensive workflow scheduling on volunteer computing systems - انتشار 2015

اختصاصی از رزفایل دانلود مقاله Cloud-aware data intensive workflow scheduling on volunteer computing systems - انتشار 2015 دانلود با لینک مستقیم و پر سرعت .

Future Generation Computer Systems

Volume 51, October 2015, Pages 87–97

Abstract

Volunteer computing systems offer high computing power to the scientific communities to run large data intensive scientific workflows. However, these computing environments provide the best effort infrastructure to execute high performance jobs. This work aims to schedule scientific and data intensive workflows on hybrid of the volunteer computing system and Cloud resources to enhance the utilization of these environments and increase the percentage of workflow that meets the deadline. The proposed workflow scheduling system partitions a workflow into sub-workflows to minimize data dependencies among the sub-workflows. Then these sub-workflows are scheduled to distribute on volunteer resources according to the proximity of resources and the load balancing policy. The execution time of each sub-workflow on the selected volunteer resources is estimated in this phase. If any of the sub-workflows misses the sub-deadline due to the large waiting time, we consider re-scheduling of this sub-workflow into the public Cloud resources. This re-scheduling improves the system performance by increasing the percentage of workflows that meet the deadline. The proposed Cloud-aware data intensive scheduling algorithm increases the percentage of workflow that meet the deadline with a factor of 75% in average with respect to the execution of workflows on the volunteer resources.

 

Keywords

• Volunteer computing;
• Resource provisioning;
• Data intensive workflow scheduling;
• Cloud computing