Status and future perspectives for lattice gauge theory calculations to the exascale and beyond Bálint Joó, Chulwoo Jung, Norman H. Christ, William Detmold, Robert G. Edwards, Martin Savage and Phiala Shanahan Eur. Phys. J. A, 55 11 (2019) 199 Published online: 14 November 2019 DOI: 10.1140/epja/i2019-12919-7