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README.md

miniGhost 3D Halo-Exchange Mini-Application

A broad range of scientific computation involves the use of difference stencils. In a parallel computing environment, this computation is typically implemented by decomposing the spacial domain, inducing a “halo exchange” of process-owned boundary data. This approach adheres to the Bulk Synchronous Parallel (BSP) model. Because commonly available architectures provide strong inter-node bandwidth relative to latency costs, many codes “bulk up” these messages by aggregating data into a message as a means of reducing the number of messages. A renewed focus on non-traditional architectures and architecture features provides new opportunities for exploring alternatives to this programming approach.

MiniGhost represents a 3D nearest neighbor halo-exchange communications that are present in a many HPC codes.

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MiniGhost Halo Exchange Mini-Application

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