Laboratory  of  Information  Technologies 

CMS High Level Trigger Run.

The run has been done from 20 February till 7 March, 2000.

Centers taken part in the run: CERN. INFN (Italy) , INP MSU and ITEP (Russia) ,
UC Davis and FSU (USA), Helsinki Univ. (Finland)

The task was:
     in total to generate the following sets of events:
weighted events:  
1 muon pt > 1.5 GeV
1 muon pt > 4.0 GeV
1 muon pt > 10. GeV
MBias1mu
200,000 events
200,000 events
   50,000 events   
100,000 events
50,000 events
(for Florida)
(for CERN)
(for CERN)
(for CERN)
(25000 for Russia
25000 for Helsinki Univ)
unweighted events:  
W_lmu
Z_lmu
tt2mu
WZ2mu
HWW2m
HZZ4m
MBmix_inu2
50,000 events
50,000 events
10,000 events
10,000 events
25,000 events
25,000 events
50,000 events
(for UC Davis)
(for INFN)
(for INFN)
(for INFN)
(for INFN)
(for INFN)
(for INFN)


In total to generate 820K events
Average size of event 2 MByte
Generation time (PYTHIA+SMSIM) 130 s/ev
Total data size to transfer to CERN 50 GByte (for Russia)

The prototypes of Russian Regional Center, created in INP MSU and ITEP was use

INP MSU PC/Linux farm: Pentium-II/350MHz + two Celeron/400MHz + Dual PPro/200
and two Pentium-II/350MHz in cluster;
ITEP PC/Linux farm: five Pentium-II/400MHz,
and four Pentium-II/400MHz in cluster.

Total disk space for data storage:   8OGByte.

Data transfering to CERN:

via Internet using network satellite channel Moscow-DESY-CERN, total bandwidth was 512Kbit/s, within it the deducated subchannel 380Kbit/s was organized for the run usage. This deducated subchannel allowed transfering of 8Gbyte data files per day in compressed mode. In parallel 8 files were transfered. Transfering larger number of file; shown overloading of bandwidth. Mean transfering time was about 20 hours per 1 Gbyte.
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