I.Golutvin, V.Korenkov, A.Lavrent'ev, R.Pose, E.Tikhonenko
Participation of JINR specialists in the CMS experiment at LHC requires a wide use of computer resources. In the context of JINR activities in the CMS Project, hardware and software resources have been provided at JINR for full participation of JINR specialists in the CMS experiment; the JINR computer infrastructure was made closer to the CERN one. JINR also provides the informational support for the CMS experiment (web-server http://rdms-cms.jinr.ru).
Plans for further CMS computing support at JINR are stated.
Computing, software and networks are of paramount importance to the Compact Muon Solenoid (CMS) experiment. Solving of many tasks both in the construction and runnig phases of the CMS experiment requires a wide use of computer resources. All these requirements are stated in the CMS Computing Technical Proposal (CMS CTP) .
More than 1600 scientists from 151 scientific centres participate in the CMS Project. In 1994 Russian and Dubna Member States collaborating in CMS decided to organize themselves in a single collaboration, the Russia/ Dubna Member States CMS collaboration (RDMS CMS).
In the context of JINR activities in the CMS Project, we consider our task to provide hardware and software resources at JINR for full participation of JINR specialists in the CMS experiment and make the JINR computer infrastructure closer to the CERN one.
Common CMS requirements on computing
The main tasks at construction phase requiring computer resources
(acccording to CMS CTP) are:
Taking into account all these requirements, we can formulate that
for all CMS institutes in the construction phase of the CMS project is needed:
Taking into account all these requirements, we can formulate that for all CMS institutes in the construction phase of the CMS project is needed:
In 1997 the SUN CMS cluster has been created at JINR. The computational environment is the same as at the CERN CMS cluster (cms.cern.ch). The CMS cluster at JINR supports both the tasks of simulation and data processing. The cluster is also used as archive server for electronic and mechanical design. Site-licences for JINR on Fortran F77-4.0 and C++-4.1 provide all JINR specialists with complete conditions in Solaris OS environment for their work, including the use of current CERNLIB versions. The latest versions of many FSF/GNU products widely used in JINR are installed on the cluster.
JINR SUN CMS Cluster Resources:
RDMS CMS WWW-Server
The CMS informational system is heavily based on the world-wide web (WWW). The web-server (http://rdms-cms.jinr.ru ) has been designed at JINR and contains information on RDMS CMS collaboration activities in different forms (texts, tables, draughts, figures, pictures, etc.). The total number of documents on this server is about 500. This web-server has been adopted as an official web-server for the RDMS CMS collaboration by the RDMS CMS Collaboration Board in June, 1997. The quality of the server structure and its contents have been highly appreciated by CERN experts.
Now on the RDMS CMS web-server (http://rdms-smc.jinr.ru) there are references from the CERN CMS web-servers CMSDOC and CMSINFO. JINR is responsible for further development and support of the RDMS CMS web-server. Now the server is accessed dozens of times a day from many sites (from CERN, Russia, USA, France, Italy, etc.). The RDMS CMS welcome-page on the WWW-server is presented in Fig.1.
Plans for further CMS computing support at JINR
Modernization of the current local network (ATM) and development of external network communications from JINR will promote more effective participation of JINR specialists in the CMS project.
Software evolution strategy requires use of object-oriented methods. In the context of this trend, it is neccessary for JINR to obtain the corresponding software and force specialists to be experienced in the object-oriented approach.
JINR activities on CMS computing at JINR have been reported at Annual RDMS CMS Meetings in 1996 and 1997 [2-5].