Gauge Field Generation on Large-Scale GPU-Enabled Systems

Abstract

Over the past years GPUs have been successfully applied to the task of inverting the fermion matrix in lattice QCD calculations. Even strong scaling to capability-level supercomputers, corresponding to O(100) GPUs or more has been achieved. However strong scaling a whole gauge field generation algorithm to this regim requires significantly more functionality than just having the matrix inverter utilizing the GPUs and has not yet been accomplished. This contribution extends QDP-JIT, the migration of SciDAC QDP++ to GPU-enabled parallel systems, to help to strong scale the whole Hybrid Monte-Carlo to this regime. Initial results are shown for gauge field generation with Chroma simulating pure Wilson fermions on OLCF TitanDev.

arXiv commentThe 30th International Symposium on Lattice Field Theory, June 24-29, 2012, Cairns, Australia (Acknowledgment and Citation added)

References in corpus (7)

• Solving Lattice QCD systems of equations using mixed precision solvers on GPUs
• Speeding up the Hybrid-Monte-Carlo algorithm for dynamical fermions
• Scaling Lattice QCD beyond 100 GPUs
• Excited State Nucleon Spectrum with Two Flavors of Dynamical Fermions
• Chronological Inversion Method for the Dirac Matrix in Hybrid Monte Carlo
• Speeding up the Hybrid-Monte-Carlo algorithm for dynamical fermions
• Accelerating QDP++/Chroma on GPUs