Hello *,

I'd like to invite you to the presentation of Tünde Bálint about middleware independent job submission.

Her master thesis is sourced from the job submission limitations of workflow engine WS-VLAM, which is currently limited to DAS3 and LCG-CE Grid Sites.

Key words: WS-VLAM, SAGA, MW independent job submission

Location: Nikhef building, room N041 (see below for route) Time: Tuesday, October 12, 11:00 am

Abstract:

Modern science and engineering are increasingly done in a collaborative fashion. These collaborations are multi-institutional, multi-disciplinary and geographically distributed environments. The Grid is the collection of physical and logical resources such as computing and storage facilities, file systems and high performance networks to which shared access is mediated by grid protocols. A number of middleware implementations have been proposed and implemented that interface the user applications executing on the Grid infrastructure. Thus, the majority of the Grids work in isolation, because the exposed interfaces are incompatible. It is common for the resource needs of grid applications to go beyond what is available in any of the sites making up a Grid. In order for a user to use several grids, running different middleware system, he/she has to be familiar with all the details of these system. In this thesis we look into the challenging requirements for virtualizing the grid middleware systems and enabling clients to submit to several Grids with one unified interface. The developed application is easily extensible, thus allowing the integration with other middleware systems too. Managing credentials, jobs and data is done in a unified way. At the moment the gMInION abstract layer allows users to access the Grid resources which use the gLite or Globus middleware. An experimental evaluation of access latencies and added overhead is presented. These results show that the overheads introduced for using the new gMInION services are acceptable. The developed system can be a valuable asset for individual clients or for workflow manager systems and further research into Grid middleware independent submission systems.

regards,

Oscar

* (From the Nikhef mainhall/coffee area): N041 is located down the corridor towards the old UvA F-building. Before entering the F-building, take a right. Walk 'til the end (next to the Nikhef workshop area) and take a left-left and you're there.