GridPP Meeting Jan 2003R. Hughes-Jones Manchester
ATLAS Trigger/DAQ Real-time use of the Grid Network
Richard Hughes-JonesThe University of Manchester
GridPP Meeting Jan 2003R. Hughes-Jones Manchester
GridPP Meeting Jan 2003R. Hughes-Jones Manchester
ATLAS Trigger/DAQ Real-time Use of GÉANT
Wish to test remote processing for Level 3 Trigger Way to make strong links on-off line Grids CERN NBI Krakow Manchester involved Slides from Bob Dobinson Dec 02 Trigger/DAQ Week Would be part of DataGrid WP7 collaboration with
Dante WP7 Response:
Would investigate aspects of interactive Grid computing Would strengthen the collaboration with Dante Does not use Middleware eg globus (but may well need
AAA in the future)
GridPP Meeting Jan 2003R. Hughes-Jones Manchester
An ATLAS TDAQ Candidate Architecture. Message Flows:
L2PU request to ROBs. SFI request to ROBs. Super to L2PU.
Low rate ~ 230Hz / L2PU Super to DFM.
Grouped accept+reject from L2 ~ 2 kHz 1Super to 1DMF
DMF to SFI . Low rate ~ 20 Hz /SFI
DFM to ROB. Mcast clears
GridPP Meeting Jan 2003R. Hughes-Jones Manchester
LARGE GE SWITCHES
152 SFIsDual CPU
2
1600 ROBs
FE/GE SWITCHES
Scalable 1 to 4 ? ?
SUPERVISORS
FE Fast Ethernet
GE Gigabit Ethernet
DFM
PSUEDO ROB
GE SWITCHES
378 L2PUsDual CPU
1 14
1 1600
1 27
1
8
1 38
1 4
1 38
5.2 Mbytes/s
72.8 Mbytes/s
18.9 Mbytes/s
75.2 Mbytes/s
3
Buffers to L2 processors and L3 event builder.
GridPP Meeting Jan 2003R. Hughes-Jones Manchester
1 2 3 4 149 150 152151
1 50
75.2 Mbytes/s
1 38
57.2 Mbytes/s
1 2 3 30
1.9 Mbytes/s
0.19 Mbytes/s5.7 2 Mbytes/s
1 2 3 30
EVENT FILTER FARMS Dual CPU
CERNNetwork
ToStorage
SFOs
REMOTE FARMS
BACK ENDMANAGER
57.5 Mbytes/s
ControlNetwork N
SFIs
L3 event builder to Filter farms and Storage.
GridPP Meeting Jan 2003R. Hughes-Jones Manchester
Nordunet
Darenet
CERN network
Polish National Network
GEANTPAN EuropeanGigabit ResearchNetwork
INP Krakow NBICopenhagen
BAT 513
Genevaairport
Lyngby
Poznan
Stockholm
1 GE
1 GE
1 GE
Manchester
SuperJANET
The Planned Network (some already going).