Open Access
International Journal of High Performance Computing Applications, volume 33, issue 5, pages 973-986
Studies on the energy and deep memory behaviour of a cache-oblivious, task-based hyperbolic PDE solver
Charrier Dominic E
1
,
Hazelwood Benjamin
1
,
Tutlyaeva Ekaterina
2
,
Bader Michael
3
,
Dumbser M.
4
,
Kudryavtsev Andrey
5
,
2
RSC Group, Moscow, Russia
|
5
Intel, Folsom, CA, USA
|
Publication type: Journal Article
Publication date: 2019-04-15
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor: 3.1
ISSN: 10943420, 17412846
Hardware and Architecture
Software
Theoretical Computer Science
Abstract
We study the performance behaviour of a seismic simulation using the ExaHyPE engine with a specific focus on memory characteristics and energy needs. ExaHyPE combines dynamically adaptive mesh refinement (AMR) with ADER-DG. It is parallelized using tasks, and it is cache efficient. AMR plus ADER-DG yields a task graph which is highly dynamic in nature and comprises both arithmetically expensive tasks and tasks which challenge the memory’s latency. The expensive tasks and thus the whole code benefit from AVX vectorization, although we suffer from memory access bursts. A frequency reduction of the chip improves the code’s energy-to-solution. Yet, it does not mitigate burst effects. The bursts’ latency penalty becomes worse once we add Intel Optane technology, increase the core count significantly or make individual, computationally heavy tasks fall out of close caches. Thread overbooking to hide away these latency penalties becomes contra-productive with noninclusive caches as it destroys the cache and vectorization character. In cases where memory-intense and computationally expensive tasks overlap, ExaHyPE’s cache-oblivious implementation nevertheless can exploit deep, noninclusive, heterogeneous memory effectively, as main memory misses arise infrequently and slow down only few cores. We thus propose that upcoming supercomputing simulation codes with dynamic, inhomogeneous task graphs are actively supported by thread runtimes in intermixing tasks of different compute character, and we propose that future hardware actively allows codes to downclock the cores running particular task types.
Citations by journals
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1
2
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SIAM Journal of Scientific Computing
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SIAM Journal of Scientific Computing
2 publications, 20%
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Lecture Notes in Computer Science
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Lecture Notes in Computer Science
2 publications, 20%
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International Journal of High Performance Computing Applications
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International Journal of High Performance Computing Applications
1 publication, 10%
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Journal of Scientific Computing
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Journal of Scientific Computing
1 publication, 10%
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Computer Physics Communications
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Computer Physics Communications
1 publication, 10%
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Lecture Notes in Computational Science and Engineering
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Lecture Notes in Computational Science and Engineering
1 publication, 10%
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1
2
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Citations by publishers
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1
2
3
4
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Springer Nature
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Springer Nature
4 publications, 40%
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Society for Industrial and Applied Mathematics (SIAM)
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Society for Industrial and Applied Mathematics (SIAM)
2 publications, 20%
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SAGE
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SAGE
1 publication, 10%
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Elsevier
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Elsevier
1 publication, 10%
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1
2
3
4
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- We do not take into account publications that without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Charrier D. E. et al. Studies on the energy and deep memory behaviour of a cache-oblivious, task-based hyperbolic PDE solver // International Journal of High Performance Computing Applications. 2019. Vol. 33. No. 5. pp. 973-986.
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Charrier D. E., Hazelwood B., Tutlyaeva E., Bader M., Dumbser M., Kudryavtsev A., Moskovsky A., Weinzierl T. Studies on the energy and deep memory behaviour of a cache-oblivious, task-based hyperbolic PDE solver // International Journal of High Performance Computing Applications. 2019. Vol. 33. No. 5. pp. 973-986.
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TY - JOUR
DO - 10.1177/1094342019842645
UR - https://doi.org/10.1177%2F1094342019842645
TI - Studies on the energy and deep memory behaviour of a cache-oblivious, task-based hyperbolic PDE solver
T2 - International Journal of High Performance Computing Applications
AU - Charrier, Dominic E
AU - Hazelwood, Benjamin
AU - Tutlyaeva, Ekaterina
AU - Bader, Michael
AU - Kudryavtsev, Andrey
AU - Moskovsky, Alexander
AU - Weinzierl, Tobias
AU - Dumbser, M.
PY - 2019
DA - 2019/04/15 00:00:00
PB - SAGE
SP - 973-986
IS - 5
VL - 33
SN - 1094-3420
SN - 1741-2846
ER -
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@article{2019_Charrier,
author = {Dominic E Charrier and Benjamin Hazelwood and Ekaterina Tutlyaeva and Michael Bader and Andrey Kudryavtsev and Alexander Moskovsky and Tobias Weinzierl and M. Dumbser},
title = {Studies on the energy and deep memory behaviour of a cache-oblivious, task-based hyperbolic PDE solver},
journal = {International Journal of High Performance Computing Applications},
year = {2019},
volume = {33},
publisher = {SAGE},
month = {apr},
url = {https://doi.org/10.1177%2F1094342019842645},
number = {5},
pages = {973--986},
doi = {10.1177/1094342019842645}
}
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Charrier, Dominic E., et al. “Studies on the energy and deep memory behaviour of a cache-oblivious, task-based hyperbolic PDE solver.” International Journal of High Performance Computing Applications, vol. 33, no. 5, Apr. 2019, pp. 973-986. https://doi.org/10.1177%2F1094342019842645.
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