When viewing the Technical Program schedule, on the far righthand side
is a column labeled "PLANNER." Use this planner to build your own
schedule. Once you select an event and want to add it to your personal
schedule, just click on the calendar icon of your choice (outlook
calendar, ical calendar or google calendar) and that event will be
stored there. As you select events in this manner, you will have your
own schedule to guide you through the week.
You can also create your personal schedule on the SC11 app (Boopsie) on your smartphone. Simply select a session you want to attend and "add" it to your plan. Continue in this manner until you have created your own personal schedule. All your events will appear under "My Event Planner" on your smartphone.
A Long-Distance InfiniBand Interconnection Between Two Clusters in Production Use
SESSION: State of the Practice - AICS/Security/Net
EVENT TYPE: State of the Practice
TIME: 2:30PM - 3:00PM
SESSION CHAIR: David Martin
AUTHOR(S):Sabine Richling, Steffen Hau, Heinz Kredel, Hans-Günther Kruse
ABSTRACT: We discuss operational and organizational issues of an InfiniBand interconnection between two clusters over a distance of 28 km in day-to-day production use. We describe the setup of hardware and networking components, and the solution of technical integration problems. Then we present solutions for a federated authorization system for the cluster within our two participating universities and other organizational integration problems. Performance measurements for MPI communication and file access to Lustre storage systems are presented. The results and a simple performance model show that MPI performance is intrinsically poor across the long-distance interconnection with limited bandwidth. However, file access and MPI communication among nodes on each side are barely affected by the limitations of the interconnection even at high load. Our organizational and technical setup allows the operation of the two clusters as a single system with lower administration costs and a better load balance than in a disconnected setup.