Scientific Computing Seminar

Date:

Friday, March 5, 2004

Time:

1:00pm-2:00pm

Location:

50A-5132

Seminar Speaker:

Kurt Stockinger
Scientific Data Management Group
CRD, LBNL

Title:

Scheduling and Replica Optimization Techniques on the Grid

Abstract:

Many current scientific projects are based on large scale applications that are both computationally complex and require managing large amounts of distributed data. In order to evaluate the impact of resource optimisation algorithms, simulation of the computational Grid environment can achieve important performance results before any algorithm is deployed on a Grid.

In this talk, we study the effects of various job scheduling and data replication strategies and compare them in a variety of Grid scenarios, evaluating several performance metrics. We base our simulation studies on a world-wide Grid testbed for data intensive high energy physics experiments. We use the Grid simulator OptorSim that we developed within the European Data Grid Project managed by CERN. OptorSim includes an economic model along with a peer-to-peer auction protocol that optimises both the selection of replicas for running jobs and the dynamic creation of replicas in Grid sites using a file revenue prediction function.

Sponsor of Seminar:

Arie Shoshani

Scientific Computing

Contact Esmond G. Ng EGNg@lbl.gov