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Power states in power-scalable systems are managed to maximize performance and reduce energy waste. Power-scalable processor capabilities (e.g., Intel Turbo Boost) embrace a "faster is better" approach to power management. While these technologies can vastly improve performance and energy efficiency, there is a growing body of evidence that "faster is not always better". For example,...
Accelerators are used in about 13% of the current Top500 List. Supercomputers leveraging accelerators grew by a factor of 2.2x in 2012 and are expected to completely dominate the Top500 by 2015. Though most of these deployments use NVIDIA GPGPU accelerators, Intel's Xeon Phi architecture will likely grow in popularity in the coming years. Unfortunately, there are few studies analyzing the performance...
The ever-increasing memory footprint in large scale applications not only requires efficient computation, but also needs efficient communication. Traditionally huge page is used to reduce CPUpsilas TLB miss, but how huge page impacts communication performance, and how HPC applications in large scale benefit from huge page are still not clear. In this paper, we support huge page in our D5000A platform...
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