TY  - CONF
AU  - Brömmel, Dirk
AU  - Frings, Wolfgang
AU  - Wylie, Brian J. N.
TI  - Extreme-scaling Applications 24/7 on JUQUEEN Blue Gene/Q
VL  - 27
CY  - Amsterdam
PB  - IOS Press
M1  - FZJ-2016-02488
T2  - Advances in Parallel Computing
SP  - 817-826
PY  - 2016
AB  - Jülich Supercomputing Centre has offered Extreme Scaling Workshops since 2009, with the latest edition in February 2015 giving seven international code teams an opportunity to (im)prove the scaling of their applications to all 458752 cores of the JUQUEEN IBM BlueGene/Q. Each of them successfully adapted their application codes and datasets to the restricted compute-node memory and exploit the massive parallelism with up to 1.8 million processes or threads. They thereby qualified to become members of the High-Q Club which now has over 24 codes demonstrating extreme scalability. Achievements in both strong and weak scaling are compared, and complemented with a review of program languages and parallelisation paradigms, exploitation of hardware threads, and file I/O requirements.
T2  - International Conference on Parallel Computing
CY  - 1 Sep 2015 - 4 Sep 2015, Edinburgh (United Kingdom)
Y2  - 1 Sep 2015 - 4 Sep 2015
M2  - Edinburgh, United Kingdom
LB  - PUB:(DE-HGF)8
UR  - <Go to ISI:>//WOS:000578348400085
DO  - DOI:10.3233/978-1-61499-621-7-817
UR  - https://juser.fz-juelich.de/record/809001
ER  -