Hardware/software co‐design of global cloud system resolving models

摘要: [1] We present an analysis of the performance aspects atmospheric general circulation model at ultra-high resolution required to resolve individual cloud systems and describe alternative technological paths realize integration such a in relatively near future. Due superlinear scaling computational burden dictated by Courant stability criterion, solution equations motion dominate calculation these resolutions. From this extrapolation, it is estimated that credible kilometer scale would require sustained rate least 28 Petaflop/s provide scientifically useful climate simulations. Our design study portends alternate strategy for practical power-efficient implementations next-generation ultra-scale systems. We demonstrate hardware/software co-design low-power embedded processor technology could be exploited custom machine tailored specifications affordable cost power considerations. A strawman presented consisting excess 20 million processing elements effectively exploits forthcoming many-core chips. The system pushes limits domain decomposition increase explicit parallelism, suggests functional partitioning sub-components code (much like coarse-grained computation between atmospheric, ocean, land, ice components current coupled models) may necessary future scaling.