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LANS Informal Seminar: Jeff Hollingsworth
February 8, 2011 @ 15:00 CST
Seminar Title: Friends Don’t Let Friends Tune Code
Speaker: Jeff Hollingsworth, Professor & Associate Chair, Computer Science Dept., University of Maryland
Date/Time: 2011-02-08 15:00
Location: Bldg 240 Conference Center 1404-1405
Description:
Tuning code for a specific system has often been necessary, but rarely enjoyable or easy. With many variants of a given architecture now being used in machines, for example the many implementations of the x86 instruction set, tuning has become even more difficult. In this talk, I will outline our work on the Active Harmony Auto-tuning system. I will present some results showing that we can improve the performance of real codes, and that the best configuration can vary quite a bit even among very similar CPUs. Our tool is capable of both online (tuning for a single execution) and offline (tuning using training runs) operation. I will also describe our core search algorithm, Parallel Rank Order.