2+1 Flavor Domain Wall Fermion QCD Lattices: Ensemble Production and (some) Properties

TL;DR

This paper reports on the production and properties of 2+1 flavor domain wall fermion lattice QCD ensembles, including a large $96^3 imes 192$ volume ensemble on SUMMIT at ORNL, highlighting computational techniques used.

Contribution

It presents new large-scale lattice QCD ensembles with detailed methodology and progress updates, utilizing advanced algorithms for efficient simulations.

Findings

Successful generation of a large $96^3 imes 192$ ensemble.

Implementation of the Exact One Flavor Algorithm for strange quarks.

Use of Multisplitting Preconditioned Conjugate Gradient for Dirac equation solutions.

Abstract

The RBC and UKQCD Collaborations continue to produce 2+1 flavor domain wall fermion ensembles, currently focusing on an ensemble with a $96^3 \times 192$ volume on SUMMIT at ORNL with $1/a \approx 2.8$ GeV, and smaller ensembles at stronger couplings. The $1/a \approx 2.8$ GeV ensemble uses the Exact One Flavor Algorithm for the strange quark, along with the Multisplitting Preconditioned Conjugate Gradient for solving the Dirac equation. We report on our progress and experience to date with the evolution of this ensemble.