Does the Intel Xeon Phi processor fit HEP workloads?

20th International Conference on Computing in High Energy and Nuclear Physics

物理学;计算机科学

Nowak, A.^1 ; Bitzes, G.^1 ; Dotti, A.^1 ; Lazzaro, A.^1 ; Jarp, S.^1 ; Szostek, P.^1 ; Valsan, L.^1 ; Botezatu, M.^1 ; Leduc, J.^1

CERN Openlab, Geneva, Switzerland^1

关键词: Offline;    Parallelizations;    Scaling limitation;    Software and hardwares;    Software frameworks;    Vectorization;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/513/5/052024/pdf
DOI  :  10.1088/1742-6596/513/5/052024

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

This paper summarizes the five years of CERN openlab's efforts focused on the Intel Xeon Phi co-processor, from the time of its inception to public release. We consider the architecture of the device vis a vis the characteristics of HEP software and identify key opportunities for HEP processing, as well as scaling limitations. We report on improvements and speedups linked to parallelization and vectorization on benchmarks involving software frameworks such as Geant4 and ROOT. Finally, we extrapolate current software and hardware trends and project them onto accelerators of the future, with the specifics of offline and online HEP processing in mind.