The large increase in luminosity expected from Run 4 of the LHC presents the ATLAS experiment with a new scale of computing challenge, and we can no longer restrict our computing to CPUs in a High Throughput Computing paradigm. We must make full use of the High Performance Computing resources available to us, exploiting accelerators and making efficient use of large jobs over many nodes. Here we describe current developments in introducing these capabilities to Athena, ATLAS’s general software framework.
Rej et al. (Tue,) studied this question.