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.
In principle, yes, but I know that the checks fail because the Ubuntu version on the github runner changed. I've just compiled it on QBIG without problems and will merge now.
Is the merging blocked if the checks fails?