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Issue No. 06 - Nov.-Dec. (2012 vol. 32)
ISSN: 0272-1732
pp: 4-16
Manish Arora , University of California, San Diego
Siddhartha Nath , University of California, San Diego
Subhra Mazumdar , University of California, San Diego
Scott B. Baden , University of California, San Diego
Dean M. Tullsen , University of California, San Diego
In an integrated CPU-GPU system, the CPU executes code that is profoundly different than in past CPU-only environments. This new code's characteristics should drive future CPU design and architecture. Post-GPU code has lower instruction-level parallelism, more difficult branch prediction, and loads and stores that are significantly harder to predict. Post-GPU code exhibits much smaller gains from the availability of multiple cores, owing to reduced thread-level parallelism.
Graphics processing unit, Benchmark testing, Central Processing Unit, Parallel processing, Hidden Markov models, Computational modeling, CPU architecture, CPU-GPU systems, heterogeneous designs

D. M. Tullsen, S. B. Baden, S. Mazumdar, S. Nath and M. Arora, "Redefining the Role of the CPU in the Era of CPU-GPU Integration," in IEEE Micro, vol. 32, no. , pp. 4-16, 2012.
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