An OpenCL-based single-GPU lattice QCD implementation matches CUDA performance on NVIDIA A100 GPUs and also runs on AMD MI250X, on lattice sizes up to 64^4.
Lattice QCD based on OpenCL
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We present an OpenCL-based Lattice QCD application using a heatbath algorithm for the pure gauge case and Wilson fermions in the twisted mass formulation. The implementation is platform independent and can be used on AMD or NVIDIA GPUs, as well as on classical CPUs. On the AMD Radeon HD 5870 our double precision dslash implementation performs at 60 GFLOPS over a wide range of lattice sizes. The hybrid Monte-Carlo presented reaches a speedup of four over the reference code running on a server CPU.
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Portable Lattice QCD implementation based on OpenCL
An OpenCL-based single-GPU lattice QCD implementation matches CUDA performance on NVIDIA A100 GPUs and also runs on AMD MI250X, on lattice sizes up to 64^4.