Journal of South China University of Technology (Natural Science Edition) ›› 2010, Vol. 38 ›› Issue (11): 122-127,134.doi: 10.3969/j.issn.1000-565X.2010.11.022

• Computer Science & Technology • Previous Articles     Next Articles

Availability-Enhanced Model for Job Execution in Computational Grids

Hu Zhou-jun  Hu Zhi-gang   

  1. School of Information Science and Engineering,Central South University,Changsha 410083,Hunan,China
  • Received:2009-11-02 Revised:2010-04-14 Online:2010-11-25 Published:2010-11-25
  • Contact: 胡周君（1982-），男，博士生，主要从事网格计算研究． E-mail:sunddy．h@163．com
  • About author:胡周君（1982-），男，博士生，主要从事网格计算研究．
  • Supported by:

    国家自然科学基金资助项目（60970038;60673165）

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Abstract:

In order to improve the quality of service（QoS） in service grid environment,the concept of Availability-Enhanced Job Execution Service（AJES） and its constructing method are proposed for the grid environment consisting of a large amount of low-availability resources.Then,an availability-enhanced model for job execution（AMJE） is derived from AJES,which redundantly schedules the resources to one or more grid sites within AJES,thus enhancing the availability required for job execution.In AMJE,different participants on behalf of their profits are described as a game,and a balance threshold of AJES availability is obtained.Experimental results show that AMJE increases the revenue of resource providers,improves the QoS level for end users,and exhibits good adaptability to dynamic grid environment.

Key words: computational grid, availability, quality of service, job execution model