Speaker
Description
With the latest generation of leadership-class machines, lattice QCD simulations are able to probe multi-scale physics with unprecedented resolution. These advancements come with super-linear increases in the costs of modern simulations due to the phenomena of critical slowing down. In the case of linear solvers for LQCD, the only robust solution to this challenge is the development and efficient implementation of effective multi-grid algorithms. In this talk we will discuss the latest developments for a multi-grid algorithm for both the naïve staggered and HISQ operator. We will present results from an MG implementation in the highly optimized QUDA library applied to ultra-fine and physical point configurations from the MILC collaboration. We will also discuss future steps towards integrating multi-grid into HISQ HMC.
