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The GPU performance in coordination of parallel tasks in access to resource groups without conflicts

Smoliński M.

Information Systems in Management

2017

Vol. 6, No. 2

143--153

In high contention environments, with limited number of shared resources, elimination of resource conflicts between tasks processed in parallel is required. Execution of all tasks without resource conflicts can be achieved by preparing a proper overall schedule for all of them. The effective calculation of conflict-free execution plan for tasks provides the conflictless scheduling algorithm that is dedicated to GPU massively parallel processing. The conflictless scheduling algorithm base on rapid resource conflict detection to mutual exclusion of conflicted tasks in access to global resources and is an alternative to other task synchronization methods. This article presents the performance of modern GPU in calculations of adaptive conflictless task schedule. The performance analysis also takes into account all data transfers to and from the GPU memory in various phases of the conflictless task scheduling algorithm.