The CICC computing complex logically consists of the following components:
Computing Resources (CE):
Interactive cluster: lxpub [01-05].jinr.ru
Gateway for external connections lxui[01-04].jinr.ru
Computing farm
The basic computing service is the Slurm Workload Manager, which is a free, open source task scheduler for Linux and Unix-like systems and is used by many of the world’s supercomputers and computing clusters.
Storage resources (SE) of the Civil code:
EOS
EOSCTA
AFS
CVMFS
dCache (only for VO CMS, ATLAS )
tape robot
tape libraries
Tapes@Enstor
Auxiliary servers .
e-mail
home WWW pages
databases MySQL , Postgres, Oracle
Nagios monitoring
sftp
….
These services mostly work “transparently” from the user’s point of view, that is, without requiring additional settings. Some of these servers (WWW, ftp, MySQL) provide support for laboratory (LIT) and institute services. The part (mail) is intended mainly to serve the needs of JINR users.
WLCG.
To maintain the WLCG site in JINR (the site is a separate cluster in a distributed WLCG environment), servers are installed that implement important services and support functions for the Russian segment of the WLCG project.
Archive:
2018 CICC architecture and facilities
In 2020, the following works were performed to change the configuration of Tir2 (JINR-LCG2):
1) Changed batch server to Slurm type. Works and is used by CE.
2) Changed Computing Element (CE) for WLCG type – ARC6 (internal slurm queue). (CREAM-CE is no longer supported by the central task launcher).
3) the farm is transferred to Scientific Linux release 7 system.
4) Added new tape robot (TS4500).
5) PhEDEx is replaced by RUCIO.
6) New servers are connected in EOS.
7) User interface lxui [01-04] .jinr.ru as a gateway for external connections
8) Increased disk space of the interactive cluster /scrc (2.2TB)