21-25 September 2009
Hotel Barcelo Sants
Europe/Zurich timezone

Load balancing techniques for a distributed WMS cluster

Not scheduled
Hotel Barcelo Sants

Hotel Barcelo Sants



Mr Daniele Cesini (INFN-CNAF)

Special requirements other than the set up mentioned in the CfA text.


Project(s) or EGEE activity presenting the demo or poster (project or activity names only)



The gLite Workload Management System is a central Grid service, responsible for the transparent dispatching of computing tasks to remote computing facilities. It is tightly coupled with the Logging and Bookeeping service which stores lifecycle information about the tasks. High throughput submission, scalability and high availability are critical requirements for a WMS/LB cluster. We present the design and deployment scheme of a DNS-based technique for geographical load-balancing. It relies on the WMSMonitor as information provider about status of the individual WMS/LB instances in the cluster. The WMSMonitor metrics, combined with the result of external submission tests allow the system to select the best WMS to be exposed to the users. The workload is effectively distributed and the submission failure prevented. This technology is effectively deployed in the Italian region since early 2009.

Primary authors

Mr Daniele Cesini (INFN-CNAF) Dr Danilo Dongiovanni (INFN-CNAF) Mr Enrico Fattibene (INFN-CNAF) Dr Tiziana Ferrari (INFN-CNAF)

Presentation materials