Contribution to a conference proceedings/Internal Report

DESY-2014-00659

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Experiences with OpenMP in tmLQCD

Deuzeman, A. (Corresponding author) ; Jansen, K.DESY* ; Kostrzewa, B.Extern* ; Urbach, C.

2013

This record in other databases:  

Report No.: DESY-13-217; HU-EP-13-60; SFB-CPP-13-93; arXiv:1311.4521

Abstract: An overview is given of the lessons learned from the introduction of multi-threading using OpenMP in tmLQCD. In particular, programming style, performance measurements, cache misses, scaling, thread distribution for hybrid codes, race conditions, the overlapping of communication and computation and the measurement and reduction of certain overheads are discussed. Performance measurements and sampling profiles are given for different implementations of the hopping matrix computational kernel.

Note: presented at the 31st International Symposium on Lattice Field Theory (Lattice 2013), 29 July - 3 August 2013, Mainz, Germany

---

Contributing Institute(s):

1. NIC (ZEU-NIC)

Research Program(s):

1. No facility / HGF program None (POF2-890) (POF2-890)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2013

---