Parallel preconditioned conjugate gradient algorithm on GPU
Parallel preconditioned conjugate gradient algorithm on GPU
复制标题
DOI:
10.1016/j.cam.2011.04.025
复制
发表时间:
2012-09
期刊:
影响因子:
--
通讯作者:
Rudi Helfenstein;J. Koko
中科院分区:
文献类型:
--
作者:
Rudi Helfenstein;J. Koko
We propose a parallel implementation of the Preconditioned Conjugate Gradient algorithm on a GPU platform. The preconditioning matrix is an approximate inverse derived from the SSOR preconditioner. Used through sparse matrix–vector multiplication, the proposed preconditioner is well suited for the massively parallel GPU architecture. As compared to CPU implementation of the conjugate gradient algorithm, our GPU preconditioned conjugate gradient implementation is up to 10 times faster (8 times faster at worst).