Adaptive Workflow Nets for Grid Computing
نویسندگان
چکیده
Existing grid applications commonly use workflows for the orchestration of grid services. Existing workflow models however suffer from the lack of adaptivity. In this paper we define Adaptive Grid Workflow nets (AGWF nets) appropriate for modeling grid workflows and allowing changes in the process structure as a response to triggering events/exceptions. Moreover, a recursion is allowed, which makes the model especially appropriate for a number of grid applications. We show that soundness can be verified for AGWF nets.
منابع مشابه
Dynamic Workflows for Grid Applications
In the Grid computing community, there are several approaches to execute not only single tasks on single Grid resources but also to support workflow schemes that enable the composition and execution of complex Grid applications. The most commonly used workflow model for this purpose is the Directed Acyclic Graph (DAG). Within the establishment of the Fraunhofer Resource Grid, we developed a Gri...
متن کاملModeling Grid Workflows with Colored Petri Nets⋆
Grid computing refers to the deployment of a widely distributed architecture for the execution of computationally challenging tasks. The grid provides a set of distributed resources which can be used for “computing on demand” or for constructing a “virtual supercomputer”. Recently, several researchers started to look at the relation between workflow management and grid computing. The flow of wo...
متن کاملMAHEFT-based Adaptive Grid Workflow Scheduling Approach
The Grid Workflow scheduling is considered an important issue in Workflow management. Workflow scheduling is a process of assigning workflow tasks to suitable computational resources. Workflow scheduling significantly affects the performance and the execution time of the workflow. A Workflow scheduling approach falls in one of three categories: static, dynamic or adaptive. Grid environment is a...
متن کاملA Grid Workflow Language Using High-Level Petri Nets
One approach to application programming for the Grid is to implement services with oftenused functionality on high-performance Grid hosts and provide them to the users located at clients. Complex applications are created by using several services and specifying the workflow between them. We discuss how the workflow of Grid applications can be described in an intuitive way as a High-Level Petri ...
متن کاملArchitectural Plan for Constructing Fault Tolerable Workflow Engines Based on Grid Service
In this paper the design and implementation of fault tolerable architecture for scientific workflow engines is presented. The engines are assumed to be implemented as composite web services. Current architectures for workflow engines do not make any considerations for substituting faulty web services with correct ones at run time. The difficulty is to rollback the execution state of the workflo...
متن کامل