Distributed resources of Czech WLCG Tier-2 center

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F20%3A00347152" target="_blank" >RIV/68407700:21340/20:00347152 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/20:00538464 RIV/61389005:_____/20:00538464

Result on the web

<a href="https://doi.org/10.1051/epjconf/202024503034" target="_blank" >https://doi.org/10.1051/epjconf/202024503034</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/202024503034" target="_blank" >10.1051/epjconf/202024503034</a>

Result language

angličtina

Original language name

Distributed resources of Czech WLCG Tier-2 center

Original language description

The Computing Center of the Institute of Physics (CC IoP) of the Czech Academy of Sciences provides compute and storage capacity to several physics experiments. Most resources are used by two LHC experiments, ALICE and ATLAS. In the WLCG, which coordinates computing activities for the LHC experiments, the computing center is Tier-2. The rest of computing resources is used by astroparticle experiments like the Pierre Auger Observatory (PAO) and the Cherenkov Telescope Array (CTA) or particle experiments like NOvA and DUNE. Storage capacity is distributed to several locations. DPM servers used by the ATLAS and the PAO are all in the same server room. ALICE uses several xrootd servers located at the Nuclear Physics Institute in Rez, about 10 km away. The storage capacity for the ATLAS and the PAO is extended by resources of the CESNET (the Czech National Grid Initiative representative) located in Ostrava, more than 100 km away from the CC IoP. Storage is managed by dCache instance, which is published in the CC IoP BDII. ATLAS users can use these resources using the standard ATLAS tools in the same way as the local storage without noticing this geographical distribution. The computing center provides about 8k CPU cores which are used by the experiments based on fair-share. The CPUs are distributed amongst server rooms in the Institute of Physics, in the Faculty of Mathematics and Physics of the Charles University, and in CESNET. For the ATLAS experiment, the resources are extended by opportunistic usage of the Salomon HPC provided by the Czech national HPC center IT4Innovations in Ostrava. The HPC provides 24-core nodes. The maximum number of allowed single-node jobs in the batch system is 200. The contribution of the HPC to the CPU consumption by the ATLAS experiment is about 15% on average.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)

Project

<a href="/en/project/LM2018104" target="_blank" >LM2018104: Research Infrastructure for experiments at CERN</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of the 24rd International Conference on Computing in High Energy and Nuclear Physics (CHEP 2019)

ISBN

—

ISSN

2100-014X

e-ISSN

2100-014X

Number of pages

7

Pages from-to

—

Publisher name

EPJ Web of Conferences

Place of publication

—

Event location

Adelaide

Event date

Nov 4, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000652214300112