论文标题
MRHS Multigrid求解器用于Wilson-Clover Fermions
MRHS multigrid solver for Wilson-clover fermions
论文作者
论文摘要
我们描述了我们针对Wilson-Clover Fermions的Multigrid求解器的实施，该求解器通过同时解决多个右侧（MRH）来增加并行性。求解器基于网格，因此在所有由网格框架支持的计算体系结构上运行。我们介绍了相关内核的详细基准，例如各种多移民级别，间接运营商和降低的跳跃和三叶草术语。基准测试是基于NVIDIA A100 GPU的JülichSuperComputingCenter的Juwels助推系统。例如，在16 GPU上求解$ 24^3 \ times128 $晶格，仅从MRHS获得的总体加速约为10倍。
We describe our implementation of a multigrid solver for Wilson-clover fermions, which increases parallelism by solving for multiple right-hand sides (MRHS) simultaneously. The solver is based on Grid and thus runs on all computing architectures supported by the Grid framework. We present detailed benchmarks of the relevant kernels, such as hopping and clover term on the various multigrid levels, intergrid operators, and reductions. The benchmarks were performed on the JUWELS Booster system at Jülich Supercomputing Centre, which is based on Nvidia A100 GPUs. For example, solving a $24^3\times128$ lattice on 16 GPUs, the overall speedup obtained solely from MRHS is about 10x.
