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Colloquium - Messmer

Challenges Faced on Petascale Architectures
Peter Messmer
Tech-X Corporation
9/25/2008
3:30pm-4:30pm

Petascale systems, consisting of tens or even hundreds of thousands of processors, have the potential to advance numerical simulations to the next level. However, in order to fully take advantage of these systems, applications have to be carefully optimized. Interprocessor communication, deep memory hierarchies and complex control flows require code tuning at different levels. Especially with the advent of heterogeneous architectures, consisting of CPUs supplemented with GPUs, Cells, FPGAs or other highly specialized processing elements, code optimization has become even more important, but at the same time also more difficult. In this talk, we will introduce some of the tools and general strategies used for code tuning on such systems and share some experiences from dealing with real-world codes.

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