1. Current Status and Plans
RDMS CMS Computing:
Current Status and Plans
V.Gavrilov1, I.Golutvin2, O.Kodolova3,
V.Korenkov2, L.Levchuk4, E.Tikhonenko2, S.Shmatov2 ,V.Zhiltsov 2
1- Institute of Theoretical and Experimental Physics, Moscow, Russia
2- Joint Institute for Nuclear Research, Dubna, Russia
3 – Skobeltsyn Institute of Nuclear Physics, Moscow, Russia
4 - National Scientific Center, Kharkov Institute of Physics and Technology, Kharkov
GRID’2014
Dubna, Russia, July 02, 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. 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

5. 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 5 5

6. 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)

7. 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 (x86 CPUs)
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

8. CMS T2 requirements Basic requirements to CMS VO T2 sites
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) Certified links with CMS T1: 2 up and 4 down
f) CMS Hammer Cloud test “OK”
g) Nominal T2-site:
10.9 kHS06 of Processing Resources
810 TB of Disk space:
30 TB of Stage Out Space
250 TB of Group Space (125 TB per group)
200 TB of Central Space
170 TB of Local Space
160 TB of User Space (~40 Users of 4 TB each)
h) “Typical” T2-center:
7.0 kHS06 of Processing Resources kHS06 of Processing Resources
530 TB of Disk space TB of Disk space 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 > 90%
Commissioned (active) links TO Tier-1 sites ≥ 2
Commissioned (active) links FROM Tier-1 sites ≥ 4 9 9

10. RDMS CMS sites availability during last month

11. Contribution of Russia into a number of jobs completed
at CMS T2-sites (July June 2014):
3.13 % - 9th in the countries rank

12. Job Summary at RDMS CMS Sites for 2014 as at the CMS Dashboard

13. Data transfer volumes and rates (August 2013 – July 2014)
~ 220TB
To Russian CMS sites
260 TB
From Russian CMS sites

14. Data transfer volumes and rates (August 2013 – July 2014)
~ 18TB
To T2_UA_KIPT site
~ 32 TB
From T2_UA_KIPT to CMS sites

15. CMS group-site associations for RU&UA sites: Space summary
April, 2012
July, 2014
July, 2014
July, 2012

16. Data transfers statistics 2010-2013
From the middle of 2010 to the end of Petabytes data have been transferred to RDMS CMS sites.
By the moment about 1.5 Petabytes of CMS data are stored at RDMS CMS sites ( 0.5 Petabytes are the data of CMS physical groups with which the RDMS sites are associated).

17. JINR-KIPT Common Activities in CMS Computing Support
Cooperation between JINR and KIPT (Kharkov, Ukraine) has been supported by 3 grants of Russian Foundation for Basic Research (RFBR) and Ukrainian Academy of Science:
Ukr_a ( ) “Preparation of LIT JINR (Dubna) and NSC KIPT (Kharkov) computing centers for CMS (CERN) distributed data analysis on the base of grid technologies” – completed (see: Bunetsky O. O. et al. , Preparation of NSC KIPT and JINR Grid-Infrastructures for Data Analysis at the CMS Experiment (CERN), P , Dubna, 2010,
Ukr_а ( ) “Support and development of LIT JINR and NSC KIPT grid-infrastructures for CMS distributed data processing during the first two years of LHC operation” – completed
Ukr_а ( ) “Data processing at the LIT JINR and NSC KIPT T2-centers of the CMS grid infrastructure at high rate of the Large Hadron Collider luminosity increase” – in a progress

18. RDMS Remote Operation Centres
JINR ROC was founded in 2009 as a part of GRID-based JINR Tier-2
MSU/IHEP ROCs were started-up two years after
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

19. About 50 Russian physicists are CMS VO members
Example of Physics analysis with GRID in the CMS Experiment with Participation of Russian Physicists
Data and Monte-Carlo simulated events are
distributed among N sites
Job is prepared at UI with CRAB submission tool
installed (CMS SW on top of LCG middleware)
Run CRAB jobs: job is going to the site where events
(Data or MC) are located
Monitoring through Dashboard (CERN IT tool)
Get results from SE to Local Desktop
Final analysis at local desktop
Measurement of the EW Z boson and two jets in pp collisions at √s = 7 TeV has been carried out using an integrated luminosity of 5 fb−1.
σ (7 TeV)= 154 ± 24 (stat.) ± 46 (exp. Syst.) ± 27 (th. syst.) ± 3 (lum.) fb
(mll > 50 GeV, pTj > 25 GeV, |η j|< 4.0, mjj >120 GeV)
ref: CMS-PAS-FSQ

20. Summary Nearest plans:
08/10/09
Summary
RDMS Tier2 sites contributes 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 (technical, financial etc.) 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
A stable and successful operation of several RDMS CMS Tier2 centers and years of operating experience lead to creation the CMS Tier-1 center in Russia as an integral part of the central data handling service of the CMS Experiment (CMS Tier-1 in Dubna) (see today presentation of Tatiana Strizh)
Nearest plans:
- to continue support RDMS CMS sites with increasing CPU resources by 14% and disks resources by 4% in 2014 and by 25% and 16% in 2015 accordingly; in further years – increasing of resources by 10-15% annually. 20 20