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A ghost cell expansion method for reducing communications in solving PDE problems

Description: In solving Partial Differential Equations, such as the Barotropic equations in ocean models, on Distributed Memory Computers, finite difference methods are commonly used. Most often, processor subdomain boundaries must be updated at each time step. This boundary update process involves many messages of small sizes, therefore large communication overhead. Here we propose a new approach which expands the ghost cell layers and thus updates boundaries much less frequently ---reducing total message … more
Date: May 1, 2001
Creator: Ding, Chris H.Q. & He, Yun
Partner: UNT Libraries Government Documents Department
open access

A ghost cell expansion method for reducing communications in solving PDE problems

Description: In solving Partial Differential Equations, such as the Barotropic equations in ocean models, on Distributed Memory Computers, finite difference methods are commonly used. Most often, processor subdomain boundaries must be updated at each time step. This boundary update process involves many messages of small sizes, therefore large communication overhead. Here we propose a new approach which expands the ghost cell layers and thus updates boundaries much less frequently ---reducing total message … more
Date: May 1, 2001
Creator: Ding, Chris H.Q. & He, Yun
Partner: UNT Libraries Government Documents Department
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