Note: Ruth discussed with us sending a team at UIC to install and debug the OSG software stack and data transfer components. We did not close the loop on this, hence a note here indicating where OSG could help. UCM issue – well, we can’t run production in STAR (we know that for 10 years) without immediate monitoring … otherwise, one bad apple and the science go south. We cannot trade good science for more resource, hence need to bring an application monitoring component like UCM ASAP.
EGEE and interoperability will be an issue for STAR as we expand to China especially … Our partners in Europe never told us to “keep off”. Perhaps a political issue rather than interoperability issue – if so, this may be an OSG EB issue.
STAR Grid Activities, OSG and Beyond D. Olson a for the STAR Collaboration The STAR Grid Team: W. Betts b , L. Didenko b , T. Freeman c , P. Jakl b , L. Hajdu b , E. Hjort a , K. Keahey c , J. Lauret b , D. Olson a , A. Rose a , I. Sakrejda a , A. Sim a a LBNL, b BNL, c ANL
We will present the ongoing grid efforts of the STAR experiment within the Open Science Grid (OSG) and beyond, as well as the integration of resources in Europe, Asia and South America. STAR is a founding member of the OSG Consortium and has several functioning resources on OSG, its main facilities at BNL/RCF and LBNL/NERSC as well as universities, Wayne & Birmingham. Additional resources are in process of connecting to OSG. Numerous distributed resources used by STAR collaborators are employing grid or grid-inspired technologies. Common examples are the usage of grid job submission tools with the STAR standard workload service called SUMS and the use of data handling and transfer tools across grids. Maximizing on heterogeneity of resources while minimizing in-house platform support efforts, evaluation of the dynamic deployment of reliable data analysis framework via STAR validated software stack with Xen virtual machine is being thoroughly investigated, leveraging advanced VM technologies and research from the CEDPS project.
Activity ↔ Development effort leveraged though CEDPS SciDAC partner project
Deploying OSG Cluster as Workspaces Pool node Pool node Pool node Pool node Pool node Pool node Pool node Pool node Pool node Pool node Pool node Pool node VWS Service Cluster manager can deploy gatekeeper and workernodes in ~ 30 min. Application workload submitted to cluster as to any other OSG CE. OSG CE image as gatekeeper Worker node images with application environment. Cluster can be retired after workload finishes, freeing resources for other applications.
We are working with rPath, Inc. in an SBIR project to use rBuilder to efficiently build and maintain OS and application images.
From the inventors of RPM, rBuilder
“ rBuilder is the first and only development tool that simplifies and automates the creation of software appliances and virtual appliances. rBuilder combines powerful features with innovative packaging techniques to yield a repeatable appliance creation process. “