High-performance throughput computing

  • Chaudhry S
  • Caprioli P
  • Yip S
 et al. 
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CMT processors offer a way to significantly improve the performance of computer systems. The return on investment for multithreading is among the highest in computer microarchitectural techniques. If you design a core from scratch to support multithreading, gains as high as 3× are possible for just a 20 percent increase in area. Even with throughput performance as the main target, we have shown that the microarchitecture necessary to support threads on a CMT can also achieve high single-thread performance. Hardware scouting, which Sun is implementing on the Rock microprocessor, can increase the single-thread performance of applications by up to 40 percent. Alternatively, scouting is a technique that makes the on-chip caches appear much larger, performance robustness technique, making up for code tailored for different on-chip cache sizes or even a different number and levels of caches.

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  • Shailender Chaudhry

  • Paul Caprioli

  • Sherman Yip

  • Marc Tremblay

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