1. I.Golutvin1, A.Kiriianov2 O.Kodolova3, V.Kotliar 4, V.Korenkov1,
Status of the RDMS CMS Computing:
I.Golutvin1, A.Kiriianov2 O.Kodolova3, V.Kotliar 4, V.Korenkov1,
L.Levchuk5, Y.Lyublev6 , E.Tikhonenko1, G. Safronov6 , L.Stepanova7 S.Shmatov1,V.Zhiltsov 1
1- Joint Institute for Nuclear Research, Dubna, Russia
2- B.P.Konstantinov Petersburg Nuclear Physics Institute, Gatchina NRC "Kurchatov Institute“, Russia
3 – Skobeltsyn Institute of Nuclear Physics, Moscow, Russia
4- Institute Of High Energy Physccs, Protvino, NRC "Kurchatov Institute“, Russia
5 - National Scientific Center, Kharkov Institute of Physics and Technology, Kharkov, Ukraine
6- Institute of Theoretical and Experimental Physics, NRC "Kurchatov Institute“, Moscow, Russia
7- Institute for Nuclear Research RAN, Moscow, Russia
GRID’2016, Dubna, Russia, July 05, 2014

2. the RDMS CMS Collaboration was founded in Dubna in September 1994
Composition of the RDMS CMS Collaboration
The Compact Muon Solenoid (CMS) is a high-performance general-purpose detector at the Large Hadron Collider (LHC) at CERN.
RDMS, as a part of CMS experiment collaboration, - Russia and Dubna Member States CMS Collaboration
Russia
Russian Federation
Institute for High Energy Physics, Protvino
Institute for Theoretical and Experimental Physics, Moscow
Institute for Nuclear Research, RAS, Moscow
Moscow State University, Institute for Nuclear Physics, Moscow
Petersburg Nuclear Physics Institute, RAS, St.Petersburg
P.N.Lebedev Physical Institute, Moscow
Associated members:
High Temperature Technology Center of Research & Development Institute of Power Engineering, Moscow
Russian Federal Nuclear Centre – Scientific Research Institute for Technical Physics, Snezhinsk
Myasishchev Design Bureau, Zhukovsky
Electron, National Research Institute, St. Petersburg
Dubna Member States
Armenia
Yerevan Physics Institute, Yerevan
Belarus
Byelorussian State University, Minsk
Research Institute for Nuclear Problems, Minsk
National Centre for Particle and High Energy Physics, Minsk
Research Institute for Applied Physical Problems, Minsk
Bulgaria
Institute for Nuclear Research and Nuclear Energy, BAS, Sofia
University of Sofia, Sofia
Georgia
High Energy Physics Institute, Tbilisi State University, Tbilisi
Institute of Physics, Academy of Science ,Tbilisi
Ukraine
Institute of Single Crystals of National Academy of Science, Kharkov
National Scientific Center, Kharkov Institute of Physics and Technology, Kharkov
Kharkov State University, Kharkov
Uzbekistan
Institute for Nuclear Physics, UAS, Tashkent
JINR
Joint Institute for Nuclear Research, Dubna
the RDMS CMS Collaboration was founded in Dubna in September 1994

3. RDMS Full Responsibility
RDMS Participation in CMS Construction
RDMS Full Responsibility
RDMS
Participation
ME1/1 ME SE EE HE HF FS

4. CMS Distributed Computing Model
Distributed computing resources managed using Grid technologies
Centers interconnected via private and national high-capacity Ethernet networks
Centers provide mass storage (disk/tape servers) and CPU resources
Hierarchical tiered structure
Detector data prompt reconstruction and calibration at the Tier-0 at CERN
Data intensive processing at Tier-1’s
User analysis and simulation production at Tier-2’s
Data tape archival at Tier-0 and Tier-1’s
Data caches at Tier-2s

5. RDMS activities in CMS Data Processing and Physics Analysis
Reconstruction & Object Performance
Calibration and alignment
Monte Carlo simulation
Design, production and installation
of Detector System(Upgrade Activity)
H-like (125.2 GeV)  Z0Z0  4 
ME1/1 muon chambers designed and
produced in Dubna

6. RDMS CMS T2 association Now Future interest
08/10/09
RDMS CMS T2 association
Now Future interest
Analysis Groups
Exotica: T2_RU_JINR Exotica: T2_RU_INR
HI: T2_RU_SINP QCD: T2_RU_PNPI
Beyond the 2-nd
Generation (B2G): T2_UA_KIPT Top: T2_RU_SINP
FWD: T2_RU_IHEP
Object/Performance Groups
Muon: T2_RU_JINR e-gamma-ECAL: T2_RU_INR
JetMET-HCAL: T2_RU_ITEP
H-like  Z0Z0  22e 6 6

7. RDMS CMS in Physics analysis
Forward Physics
Observation of diffraction in minbias events at LHC (SINP MSU)
Study of 2 jet production in hard single diffraction (IHEP, SINP MSU, YerPhi Yerevan)
Study of 2 jet production in central diffraction (IHEP, ITEP, SINP, YerPhi Yerevan)
Search for BFKL effects at di-jet production (PNPI, ITEP,INR)
Measurement of azimuthal decorrelations of Mueller-Navelet dijets (ITEP, PNPI, INR)
QCD
Measurement of the gamma+jet cross-sections (JINR, ITEP, SINP)
Study of jet production: jet shapes, jet fragmentation, jet multiplicity, multiplicity in jest etc (JINR, SINP MSU, ITEP, LPI)
Standard Model Physics
Measurement of DY muon pair production and forward-backward asymmetry (JINR, KIPT Kharkov, Minsk, Gomel)
Measurement of triple boson couplings (Minsk)
Study of EW Z boson production with two jets (MSU, ITEP)
Search for WW scattering (ITEP)
Top physics
Observing the t-channel single top process (IHEP, SINP)
Heavy Ion
QGP hard probes (heavy quarkonia and jets) and soft probes (elliptic flow) SINP MSU, LPI
Higgs
Search for Higgs bosons in decays into 2 photons, 4 leptons, 2 leptons and 2 jets, 2 leptons and 2 neutrinos (JINR, ITEP, MSU, KIPT Kharkov)
Higgs boson decay to 2 muons (MSU, ITEP)
SUSY
Search for sleptons and lepton flavor number violation (INR)
Exotics
Search for heavy neutrino and WR (INR)
Search for new resonances (extra dimensions, Z’ and other exotic states) in DY (JINR)
Search for non-resonance di-muon signals from ADD and compositeness (JINR)
Search for microscopic black holes (JINR)
About 40 RDMS CMS physicists
are members of the CMS VO

8. CMS T2 requirements
08/10/09
Basic requirements to CMS VO T2 sites for Physics group hosting:
a) persons responsible for site operation
b) site visibility (BDII)
c) availability of CMSSW actual version
d) regular file transfer test “OK”
e) Active links: Certified links with CMS T1: 2 up and 4 down
f) CMS Hammer Cloud test “OK”
g) Nominal T2-site for 2016
20 kHS06 of Processing Resources
1085 TB of Disk space (The historical distinction between central and group space is considered obsolete by now, with the Dynamic Data Placement taking care of T2 dataset allocation and cleaning - see CMS Document v2) 8 8 8

9. T2 readiness requirements
08/10/09
T2 readiness requirements
Site visibility and CMS VO support
Availability of disk and CPU resources
Daily SAM availability >= 80%
Daily HummerCloud tests efficiency >= 80%
Commissioned (active) links TO Tier-1 sites ≥ 2
Commissioned (active) links FROM Tier-1 sites ≥ 4
Good links: If more than half of the links with active transfers fall below a 50% transfer quality, Site Readiness considers the site failed. 9 9

10. Status of RDMS CMS sites (July, 2016)
(sites as in the CMS sitedb)
T2_RU_IHEP - OK
T2_RU_INR – WR* (downtime due to temporary connectivity problems)
T2_RU_ITEP – WR (problems to be resolved in the nearest time)
T2_RU_JINR - OK
T2_RU_PNPI - WR
T2_RU_SINP – WR (no funding to replace equipment; it is expected
to get funding until early 2017)
T2_UA_KIPT - OK
T3_BG_NCPHEP – critical state
T3_BG_UNI_SOFIA - OK
T3_RU_FIAN – downtime
T3_RU_MEPHI – even not in the Dashboard
*) “WR” – “waiting room” (site is not “OK”)
It is planned to include MIPT (Moscow Institute of Physics and Technology,
State University, Dolgoprudny) resources into the CMS global computing infrastructure
(as Tier2 or Tier3 is not defined yet)

11. Contribution of RDMS (Russia&Ukraine) sites into a number of jobs completed at CMS T2-sites (July June 2015):
2.01 % - 9th in the countries rank

12. Data transfer volumes and rates (August 2015 – July 2016)
1705 TB
To Russian CMS sites
902 TB
From Russian CMS sites

13. Data transfer volumes and rates (August 2015 – July 2016)
823 TB
To T2_UA_KIPT site
47 TB
From T2_UA_KIPT to CMS sites

14. RDMS CMS Remote Operation Centres
JINR ROC was founded in 2009 as a part of GRID-based JINR Tier-2
In 2012 MSU and some later – ITEP and FIAN ROCs
were started-up. MSU ROC serves for HCAL detector shifts
and Computing central shifts.
Monitoring of detector systems
Data Monitoring / Express Analysis
Shift Operations (except for run control)
Communications of JINR shifter with personal at CMS Control Room (SX5) and CMS Meyrin centre
Communications between JINR experts and CMS shifters
Coordination of data processing and data management
Training and Information

15. 08/10/09
Summary
A stable and successful operation of CMS Tier-1 in Dubna (see today presentation of Tatiana Strizh)
RDMS Tier2 sites contribute in the CMS Data Processing and Analysis Tasks
they are involved actively into data processing and analysis (as of
CMS Physics Groups associated sites)
CMS Regional Operation Centers in JINR/MSU/IHEP/FIAN are operated for remote monitoring of detector systems and data express-analysis
There is still a number of problems (financial for the most part) preventing RDMS Tier2 sites to increase their resources and operation stability. By the moment not all RDMS T2 sites are satisfied to CMS Computing Requirements 15 15