Resource Management Architecture for Satellite-based Grid Computing

Paper number

IAC-07-B2.3.04

Author

Dr. Haresh Bhatt, Space Applications Centre (SAC), ISRO, India

Coauthor

Mr. Ramesh Patel, Space Applications Centre (SAC), ISRO, India

Coauthor

Mr. Dharmesh Bhansali, Space Applications Centre (SAC), ISRO, India

Coauthor

Mr. Saikat Kundu, Space Applications Centre (SAC), ISRO, India

Year

2007

Abstract

Grid technology has emerged as an important new field by its focus on large-scale resource sharing, innovative applications and in some cases, high-performance orientation.   Grid is visualized as a global, ubiquitous and available without interrupt, ‘large’ computer having capability of effective resource utilization to meet the users’ requirements. We define each and everything connected with Grid as resource. It can be a machine, a data set, an expert giving set of services, a network, a telescope, a software, etc. Its architecture is service oriented. Researchers, working group and collaborative agencies etc. are deeply concentrating on various aspects of quality of services and resource management. Current Grid research is based on available terrestrial links. It is also assumed that all resources are accessible from anywhere at any time which requires full time connectivity to all resources. 

Grid Resource Management architecture currently addresses issues related to effective utilization of compute resources especially super computers and cluster of computers. It provides dynamic reservation and allocation mechanism also. Few researchers are putting efforts for effective utilization of terrestrial network. 

Satellite resources are very costly resources and need very good architecture for effective utilization. Several people have worked on the same to provide data communication services to the end users. Each and every satellite has its own effective resource utilization mechanism but it is being accessed and controlled from the definite machines connected through hub. The resource reservation and allocation mechanism is not extended to end user machine. Furthermore, advanced reservation mechanism is not considered as important and mandatory requirement for communication resources. Most of the allocations are normally predefined, permanent and static in nature. Dynamic allocation mechanism allows other users, already configured in the network, to utilize the unused bandwidth. However, it does not permit dynamic addition or deletion of users. 

Thus, as on today, two technologies (Compute Grid and Satellite Communication) are having required facilities at their own end for effective resource utilization. However, Individual resource management puts overheads on user to synchronize the availability of communication resource and compute resource for his application.  This task become too complex when user application requires a workflow among the grid resources connected via satellite.

Satellite based Grid computing research activity is taken up to synergize the two technologies enabling users to have transparent access to the end resource without bothering about its connectivity issues. Compute Grid Resource Reservation encapsulates the communication resource reservation and allocation. User has to simply define his compute resource requirement in his workflow application. The satellite Grid resource manager finds out the connectivity of compute resources, determines the data communication requirement and finds the suitable communication resource if resource(s) is having multiple connectivity options. It takes care of negotiating with compute resource managers as well as communication resource managers for all resources required by the workflow application. As supplementary, it also takes care of resource utilization by means of job submission, job scheduling, job monitoring and job controlling.

Currently, satellite-based grid computing is planned as a technology development using ISRO’s forthcoming satellite GSAT-4. It is functionally tested in the simulated environment. Performance evaluation of the computer resource management, communication resource management, and encapsulated resource management is being carried out using the simulated environment. 

The paper describes the details of satellite based grid resource management architecture along with its uniqueness with respect to grid resource management architecture and satellite network management server. It deals with related issues and mitigation technique. It discusses the performance evaluation results obtained from the simulated experiments carried out so far. It also provides details on experiments planned using GSAT-4.  

Abstract document

IAC-07-B2.3.04.pdf

Manuscript document

IAC-07-B2.3.04.pdf (🔒 authorized access only).

To get the manuscript, please contact IAF Secretariat.