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DD-$Ξ±$AMG on QPACE 3
October 19, 2017 Β· Declared Dead Β· π arXiv.org
"No code URL or promise found in abstract"
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Authors
Peter Georg, Daniel Richtmann, Tilo Wettig
arXiv ID
1710.07041
Category
hep-lat
Cross-listed
cs.DC,
physics.comp-ph
Citations
15
Venue
arXiv.org
Last Checked
3 months ago
Abstract
We describe our experience porting the Regensburg implementation of the DD-$Ξ±$AMG 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.
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