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This paper focuses on mesh-partitioning metrics in large-scale parallel computational fluid dynamics (CFD) simulations. Mesh partitioning has a significant influence on the efficiency of parallel preconditioned conjugated gradient (PCG) solving procedure, which is the most representative and timeconsuming part in parallel CFD. As the efficiency of parallel PCG depends on load balancing, communication...
High-performance computing (HPC) systems consume huge amount of power, while bringing about higher operational costs, lower reliability. Power optimization has become an important target for HPC system design. Network energy optimization is significant for the energy optimization of the whole system. In this paper, the dynamic energy optimization method of network with MPI communication operation...
With the increase of high performance computing systems' scale, the power consumption of HPC systems greatly increase, among which the power consumption of massive storage system occupies an important role. Measurements and analyses of massive storage system are significant for reducing the power consumption of storage system. Tianhe-1 comes in at No.5 in Nov. 2009 Top500 list with the highest ranking...
The abilities of synthesized function, intelligent control and health monitor for airborne utilities are becoming more and more important by which all the systems work efficiently and coordinately can be ensured. avionics and other systems work in order. This paper works over several items about UMS by introducing updated simulation framework and redundancy and fault tolerance. In order to obtain...
DVFS-available (Dynamic Voltage/Frequency Scaling) processors make it possible for a system to reduce the energy consumption by scaling down the frequency/voltage of the processors in high performance computing. For MPI collective operations, network communication time occupies the most of the whole time. Scaling down CPU voltage/frequency in non-critical path can effectively reduce energy consumption...
In high performance parallel computing, energy optimization for parallel loops becomes one key because the time of loops often takes a significant part of the whole execution time. Energy-constrained problem is one of the important research focuses. This paper studies energy-constrained problem based on OpenMP static loop scheduling. Firstly, we propose energy-constrained static scheduling algorithm...
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