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.
Optimizing All-to-All Algorithm for Blue Waters Using Simulation
SESSION: Research Poster Reception
EVENT TYPE: ACM Student Research Competition Poster, Poster, Electronic Poster
TIME: 5:15PM - 7:00PM
SESSION CHAIR: Bernd Mohr
ROOM:WSCC North Galleria 2nd/3rd Floors
ABSTRACT: Communication algorithms play a crucial role in the performance of large-scale parallel systems. As vendors are willing to design new custom networks with significantly different performance properties for their new supercomputers, designing new efficient communication algorithms is an inevitable challenge. This task is desirable to be done before the machine comes online since inefficient use of the system before the new algorithm's availability is a huge waste of a possibly hundreds of millions of dollars resource. In this poster, we demonstrate the usability of our simulation framework - BigSim, in meeting this challenge. Using BigSim, we observe that the commonly used Pairwise-Exchange algorithm for all-to-all communication pattern is suboptimal for the upcoming
Blue Waters system. We design a new all-to-all algorithm for Blue Waters and predict a five-fold performance improvement for large message sizes using this algorithm.
Bernd Mohr (Chair) - Juelich Supercomputing Centre
Ehsan Totoni - University of Illinois at Urbana-Champaign