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CPU Frequency scaling is a common approach used for achieving energy savings in parallel applications. A typical approach for achieving power savings is by reducing the frequency of a processor whenever the invested CPU cycles do not contribute to the progress of an application (e.g. polling for events). Many recent research efforts have been directed towards employing this approach within HPC applications...
Energy efficiency of GPUs has facilitated the usage of GPUs in many complex scientific applications. Nodes with multi-GPUs along with multi-core CPUs are quite common in today's HPC landscape. This gives the flexibility to utilize CPUs or accelerators or even both according to the workload characteristics. It is not possible to measure power and energy accurately in all the cases, an alternate approach...
A dramatic improvement in energy efficiency is mandatory for sustainable supercomputing and has been identified as a major challenge. Affordable energy solution continues to be of great concern in the development of the next generation of supercomputers. Low power processors, dynamic control of processor frequency and heterogeneous systems are being proposed to mitigate energy costs. However, the...
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