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Ingredients

Ingredients 24 x 1Gbit port switch with 2 x 10 Gbit uplinks  8 KCHF (blocking factor 1.2) 18 x 10 Gbit port (effective) switch with 6 x 10 Gbit uplink  18 KCHF

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Ingredients

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  1. Ingredients 24 x 1Gbit port switch with 2 x 10 Gbit uplinks  8 KCHF (blocking factor 1.2) 18 x 10 Gbit port (effective) switch with 6 x 10 Gbit uplink  18 KCHF Router with 140 x 10 Gbit ports  500 KCHF CPU box  3 KCHF ( 2 x 6 cores, 48 Gbyte memory, 2 x 500 Gb disks, 1 x 1 Gbit NIC) + 1 x 10 Gbit NIC  0.6 KCHF All costs are conservative estimates and have an error-bar of 20% Reference for the equipment (availability and costs) is the end of 2010

  2. 1 Gbit switch LKr and global event building 1 Gbit lines = copper 10 Gbit lines = fibre 10 Gbit router 10 Gbit switch Architecture sketch Flexibility on what is at the pit and what is in the center Don’t assume 9 KB jumbo frames ! 10 Gbit lines 10 Gbit lines LKr readout 10 Gbit lines 10 Gbit lines 1 Gbit switch 1 Gbit lines 1 Gbit lines Other detector readout Computer Center Level 2/3 filter farm • Assume • 900 LKr readout channels (38 switches == 76 x 10 Gbit ports) • ?450? Other detector channels (19 switches == 38 x 10 Gbit ports) • 50 kHz, 100 KB/event  5GB/s event building;10 s spill  50 GB memory total; • 216 cores  4 ms/event max. event building (10 Gbitswitch == 6 x 10 Gbit ports) • leaves 20 x 10 Gbit ports for level 2/3 farm , 50 KHz , 5GB/s  110ms/event reco-time • 480 cpu nodes == 5760 cores •  11 water-cooled racks + infrastructure Cost estimate Network = ~ 1.1 MCHF Cpu nodes = ~ 1.5 MCHF

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