SUMMARYMany production Grid and e-Science infrastructures have begun to offer services to end-users during the past several years with an increasing number of scientific applications that require access to a wide variety of resources and services in multiple Grids. Therefore, the Grid Interoperation Now-Community Group of the Open Grid Forum-organizes and manages interoperation efforts among those production Grid infrastructures to reach the goal of a world-wide Grid vision on a technical level in the near future. This contribution highlights fundamental approaches of the group and discusses open standards in the context of production e-Science infrastructures.
Architectural choices for High-Performance Computing systems have once again become interesting with energy efficiency for targeted workloads now being a major decision factor. A detailed understanding of the energy consumption of major system components during code execution is critical for evolving architectures towards enhanced energy efficiency. The focus of this paper is on the measurement system hardand software we designed and implemented for the assessment of the energy-to-solution of HPC workloads for the Texas Instruments TMS320C6678 (6678) Digital Signal Processor. The 6678's thermal design power falls between x86 server processors and mobile CPUs and so does its floating-point and memory system capabilities. Yet, compared to those types of processors in corresponding CMOS technology, it offers a potentially significant energy advantage. The measurement system is described together with a thorough error analysis. Measurements are processed out-of-band minimizing the impact on the measured system. Sample observations of the energy efficiency of the 6678 and its memory system are included for illustration.
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