Open AccessAcceleration of a CFD Code with a GPU
Author(s) -
Dennis C. Jespersen
Publication year - 2010
Publication title -
scientific programming
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.269
H-Index - 36
eISSN - 1875-919X
pISSN - 1058-9244
DOI - 10.1155/2010/564806
Subject(s) - computer science , speedup , code (set theory) , computational fluid dynamics , solver , parallel computing , central processing unit , acceleration , graphics processing unit , cuda , general purpose computing on graphics processing units , graphics , computational science , computer graphics (images) , computer hardware , programming language , physics , classical mechanics , mechanics , set (abstract data type)
The Computational Fluid Dynamics code OVERFLOW includes as one of its solver options an algorithm which is a fairly small piece of code but which accounts for a significant portion of the total computational time. This paper studies some of the issues in accelerating this piece of code by using a Graphics Processing Unit (GPU). The algorithm needs to be modified to be suitable for a GPU and attention needs to be given to 64-bit and 32-bit arithmetic. Interestingly, the work done for the GPU produced ideas for accelerating the CPU code and led to significant speedup on the CPU.
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