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SCHEDULE: NOV 16-21, 2014
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.
Load Balancing Scientific Applications
SESSION: Doctoral Showcase - Dissertation Research III
EVENT TYPE: Doctoral Showcase
TIME: 4:00PM - 4:15PM
SESSION CHAIR: Karen L. Karavanic
Presenter(s):Olga T. Pearce
ROOM:386-87
ABSTRACT:
Optimizing high-performance physical simulations to run on ever-growing
supercomputing systems is challenging. The dynamic behavior of large modern parallel simulation codes can lead to imbalances in computational load among processors. Load imbalance is particularly expensive at scale, because hundreds of thousands of idle processors may wait on a single overloaded processor. Future machines will support even more parallelism and efficiently redistributing and balancing load will be critical for good performance.
In this thesis, I address how to evaluate load imbalance and
make its correction affordable. I developed a model for comparison of load balance algorithms in the context of a specific application imbalance scenario,
enabling the selection of a balancing algorithm that will minimize overall runtime. I provide an accurate and fast method to balance the load in simulations with highly non-uniform density. I devised a framework for decoupling the load balancer from the application, enabling asynchronous load balancing.
Chair/Presenter Details:
Karen L. Karavanic (Chair) - Portland State University
Olga T. Pearce - Texas A&M University
Click here to download .ics calendar file
