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The term Exascale Computing is used for computing on the scale of ExaFLOPs, i.e., a quintillion FLOPs, or 1018 floating point arithmetic operations performed per second, specifically the ability to dedicate such a capability to a single task, model, simulation, or calculation. As of 2018, the capability is considered a goal pursued by the larger technically-capable countries, to use and push the decreasing cost of computing for more ambitious scientific analysis. Target dates to achieve the capability are generally around 2020, but as of 2018, at least one facility has run a calculation that it measured to achieved this rate. Scientific analysis that requires Three Dimensional Models will be more practical, such as Core Collapse Supernova models and other astrophysical phenomena.