Fugaku上的多重网格求解器
Multigrid Solver on Fugaku
摘要:
我们报告了一个多重网格求解器的三叶草费米子的超级计算机Fugaku,它使用A64FX CPU与ARM架构的实现。在Fugaku上,一个高度优化的BiCGStab求解器的实现,带有Clover费米子的域分解预处理器,称为QCD Wide SIMD库(QWS)。我们使用QWS中的预处理器作为多重网格求解器的平滑器。我们的实现显示出相当好的可扩展性和性能。代码是使用Bridge++代码框架及其扩展开发的。
英文摘要:
We report an implementation of a multigrid solver for the Clover fermion on supercomputer Fugaku, which uses A64FX CPU with Arm architecture. On Fugaku, a highly optimized implementation of BiCGStab solver with domain decomposed preconditioner for the Clover fermion, called QCD Wide SIMD library (QWS), is available. We use the preconditioner in QWS as a smoother of the multigrid solver. Our implementation shows reasonably good scaling and performance. The code is developed by using Bridge++ code framework and its extension.
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