# Grid on QPACE 4

arXiv: https://arxiv.org/abs/2112.01852 · HTML: https://mlsanity.com/paper/2112.01852/

## Key facts

- Cited by 1 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 3 Dec 2021.

## Built on by (most cited first, 1 of 1)

- [Differentiated uniformization: A new method for inferring Markov chains on combinatorial state spaces including stochastic epidemic models](https://mlsanity.com/paper/2112.10971/) (2021)

## Abstract (arXiv)

In 2020 we deployed QPACE 4, which features 64 Fujitsu A64FX model FX700 processors interconnected by InfiniBand EDR. QPACE 4 runs an open-source software stack. For Lattice QCD simulations we ported the Grid LQCD framework to support the ARM Scalable Vector Extension (SVE). In this contribution we discuss our SVE port of Grid, the status of SVE compilers and the performance of Grid. We also present the benefits of an alternative data layout of complex numbers for the Domain Wall operator.