Fewer Cores, More Hertz: Leveraging High-Frequency Cores in the OS Scheduler for Improved Application Performance

Autor: Redha Gouicem, Damien Carver, Jean-Pierre Lozi, Julien Sopena, Baptiste Lepers, Willy Zwaenepoel, Nicolas Palix, Julia Lawall, Gilles Muller

Publikováno v: 2020 USENIX Annual Technical Conference
2020 USENIX Annual Technical Conference, USENIX, Jul 2020, Boston / Virtual, United States
HAL

International audience; In modern server CPUs, individual cores can run at different frequencies, which allows for fine-grained control of the per-formance/energy tradeoff. Adjusting the frequency, however, incurs a high latency. We find that this ca

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::3d464ddc4fa75117ea761913a3800ef5
https://inria.hal.science/hal-02901169/document

Fork/Wait and Multicore Frequency Scaling: a Generational Clash

Autor: Damien Carver, Julien Sopena, Gilles Muller, Jean-Pierre Lozi, Julia Lawall, Nicolas Palix, Willy Zwaenepoel, Baptiste Lepers, Redha Gouicem

Publikováno v: PLOS@SOSP

International audience; The complexity of computer architectures has risen since the early years of the Linux kernel: Simultaneous Multi-Threading (SMT), multicore processing, and frequency scaling with complex algorithms such as Intel ® Turbo Boost

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76c0ef978fe16802f07ddd5ee67c4487
https://inria.hal.science/hal-02349987v2/file/paper.pdf

Fast and Portable Locking for Multicore Architectures

Autor: Gaël Thomas, Jean-Pierre Lozi, Florian David, Gilles Muller, Julia Lawall

Publikováno v: ACM Transactions on Computer Systems
ACM Transactions on Computer Systems, Association for Computing Machinery, 2016, ⟨10.1145/2845079⟩
ACM Transactions on Computer Systems, 2016, ⟨10.1145/2845079⟩

International audience; The scalability of multithreaded applications on current multicore systems is hampered by the performance of lock algorithms, due to the costs of access contention and cache misses. The main contribution presented in this arti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5311f1180f67ca6f33e21bafae141432
https://doi.org/10.1145/2845079

Ipanema : un langage dédié pour le développement d'ordonnanceurs multi-coeur sûrs

Autor: Redha Gouicem, Julien Sopena, Julia Lawall, Gilles Muller, Baptiste Lepers, Willy Zwaenepoel, Jean-Pierre Lozi, Nicolas Palix

Publikováno v: Compas 2017: Conférence d’informatique en Parallélisme, Architecture et Système
Compas 2017: Conférence d’informatique en Parallélisme, Architecture et Système, Jun 2017, Sophia Antipolis, France
HAL

International audience; L'ordonnanceur est un point clé au niveau des performances fournies par un système d'exploitation. Il est cependant difficile d'écrire une politique d'ordonnancement au sein d'un système d'exploitation actuel. Nous proposo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::7d07e7ad73de0fe5b1c80c0d622e20e8
https://hal.sorbonne-universite.fr/hal-02111160/file/compas2017.pdf

The Challenging Problem of Industrial Applications of Multicore-Generated Iterates of Nonlinear Mappings

Autor: Oleg Garasym, René Lozi, Jean-Pierre Lozi

Publikováno v: Industrial Mathematics and Complex Systems ISBN: 9789811037573
Industrial mathematics and complex systems, Emerging Mathematical models, Methods and Algorithms
P. Manchanda, R. Lozi, A.H. Siddiqi. Industrial mathematics and complex systems, Emerging Mathematical models, Methods and Algorithms, Springer, pp.43-76, 2017, ⟨10.1007/978-981-10-3758-0_4⟩

The study of nonlinear dynamics is relatively recent with respect to the long historical development of early mathematics since the Egyptian and the Greek civilization, even if one includes in this field of research the pioneer works of Gaston Julia

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61530a835e27a22c1e0ecd7d66fe2524
https://doi.org/10.1007/978-981-10-3758-0_4