# DD-αAMG on QPACE 3

arXiv: https://arxiv.org/abs/1710.07041 · HTML: https://mlsanity.com/paper/1710.07041/

## Key facts

- Cited by 1 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 19 Oct 2017.

## 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)

We describe our experience porting the Regensburg implementation of the DD-αAMG solver from QPACE 2 to QPACE 3. We first review how the code was ported from the first generation Intel Xeon Phi processor (Knights Corner) to its successor (Knights Landing). We then describe the modifications in the communication library necessitated by the switch from InfiniBand to Omni-Path. Finally, we present the performance of the code on a single processor as well as the scaling on many nodes, where in both cases the speedup factor is close to the theoretical expectations.