SC is the International Conference for
High Performance Computing, Networking,
Storage and Analysis

SCHEDULE: NOV 12-18, 2011

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.

Dymaxion: Optimizing Memory Access Patterns for Heterogeneous Systems

SESSION: GPU Optimizations


TIME: 11:00AM - 11:30AM

AUTHOR(S):Shuai Che, Jeremy Sheaffer, Kevin Skadron


Graphics processors (GPUs) have emerged as an important computing platform for general-purpose and high-performance computing, because they offer a large number of parallel cores and high memory bandwidth. However, data layouts in GPU memory often lead to sub-optimal performance for programs designed with a CPU memory interface in mind. This implies that application performance is highly sensitive to architecture and memory access patterns. This paper proposes a simple API, Dymaxion, that allows programmers to declare access patterns. The runtime then optimizes memory layouts accordingly, hiding the latency by overlapping it with inter-device transfers; and then transforms subsequent memory access addresses as necessary. We show that applications with a variety of access patterns achieve significant speedups with Dymaxion, and also explore the importance of maintaining per-device data layouts and cross-device data mappings with a case study of concurrent CPU-GPU execution.

Chair/Author Details:

Shuai Che - University of Virginia

Jeremy Sheaffer - University of Virginia

Kevin Skadron - University of Virginia

Add to iCal  Click here to download .ics calendar file

Add to Outlook  Click here to download .vcs calendar file

Add to Google Calendarss  Click here to add event to your Google Calendar

The full paper can be found in the ACM Digital Library

   Sponsors    ACM    IEEE