Isolating critical flow path and algorithmic partitioning of the AND/OR mobile workflow graph

Abstract

The standard workflow modeling approaches have insufficient information about structural stability to visualize the tasks in a complex workflow graph. The hybrid AND/OR mobile workflow graph (MWG) model addresses this issue by visualizing a fully conditioned workflow graph for dynamic networks. However, the scheduling and mapping of large scale workflows to heterogeneous resources is NP-complete in parallel and distributed computing systems. This paper aims to partition large scale workflows into mappable sub-workflows by isolating the critical flow paths using a filter matrix method. A set of algorithms are designed to perform decomposability checking and partitions of a AND/OR mobile workflow graph. The filter matrix allows input of user's constraints prior to the partitioning of a complex workflow graph. The experimental results show that valid partitions are obtained from various AND/OR mobile workflow graph. Moreover, non-linear regression analysis is presented to project the algorithmic time complexity for the partitioning of the large scale workflow graphs. A detailed comparative analysis of the proposed algorithm is included in the paper. (C) 2019 Elsevier B.V. All rights reserved.