tmLQCD is a freely available software suite providing a set of tools to be used in lattice QCD simulations. This is mainly a HMC implementation (including PHMC and RHMC) for Wilson, Wilson Clover and Wilson twisted mass fermions and inverter for different versions of the Dirac operator. The code is fully parallelised and ships with optimisations for various modern architectures, such as commodity PC clusters and the Blue Gene family.
On the one hand, this is relevant for multi-shift CG with mixed-precision refinement for the 1+1 sector, on the other hand, it is also relevant for intermediate and large tm_rho shifts in the determinant and determinant ratios.
suggests that rel_delta = 1e-1 should be set for sloppy == half and for safety, the defaults for max_res_increase and max_res_increase_total should be relaxed.
kostrzewa
commented
2 years ago
Investigate the interaction of
rel_delta/use_alternative_reliablemax_res_increasemax_res_increase_totalOn the one hand, this is relevant for multi-shift CG with mixed-precision refinement for the 1+1 sector, on the other hand, it is also relevant for intermediate and large
tm_rhoshifts in the determinant and determinant ratios.