Exploiting multicore compute resources in the CMS experiment

17th International Workshop on Advanced Computing and Analysis Techniques in Physics Research

物理学;计算机科学

Ramírez, J.E.^1 ; Pérez-Calero Yzquierdo, A.^2,3 ; Hernández, J.M.^3

University of Puerto Rico Mayagüez, Mayagüez, Puerto Rico^1

Port d'Informatió Cientifica (PIC), Universitat Autónoma de Barcelona, Bellaterra (Barcelona), Spain^2

Centro de Investigaciones Energéticas, Medioambientales y Tecnók Sgicas, CIEMAT, Madrid, Spain^3

关键词: Compute resources;    Data reconstruction;    Event Processing;    Multicore architectures;    Online event selection;    Processing systems;    Resource provisioning;    Resource utilizations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/762/1/012018/pdf
DOI  :  10.1088/1742-6596/762/1/012018

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

CMS has developed a strategy to efficiently exploit the multicore architecture of the compute resources accessible to the experiment. A coherent use of the multiple cores available in a compute node yields substantial gains in terms of resource utilization. The implemented approach makes use of the multithreading support of the event processing framework and the multicore scheduling capabilities of the resource provisioning system. Multicore slots are acquired and provisioned by means of multicore pilot agents which internally schedule and execute single and multicore payloads. Multicore scheduling and multithreaded processing are currently used in production for online event selection and prompt data reconstruction. More workflows are being adapted to run in multicore mode. This paper presents a review of the experience gained in the deployment and operation of the multicore scheduling and processing system, the current status and future plans.