GT PequanRSS

Accelerating the Conjugate Gradient Algorithm with GPU in CFD Simulations
Speaker(s) : Amal Khabou (LRI, Université Paris-Sud)
We illustrate how GPU computing can be used to accelerate computational fluid dynamics (CFD) simulations. For sparse linear systems arising from finite volume discretization, we evaluate and optimize the performance of Conjugate Gradient (CG) routines designed for manycore accelerators and compare against an industrial CPU-based implementation. We also investigate how the recent advances in preconditioning, such as iterative Incomplete Cholesky (IC, as symmetric case of ILU) preconditioning, match the requirements for solving real world problems.

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