PC Farms

Two PC farms have been added to incorporate ever growing demands for generic Monte Carlo generation. The first farm, added in 1999, consists of 16 4CPU DELL Power Edge servers. CPUs are 550 MHz Pentium III Xeon processors. The second farm, which was added one year later, consists of 20 4CPU DELL Power Edge servers with 550 MHz Pentium III processors and 2.4 TB RAID systems attached to four 2 CPU servers. All compute nodes are connected via 100 BaseT and two farms are connected using GbE hub. These nodes are connected to two data servers of the KEKB computing system. A little less than one million Monte Carlo events can be generated in one day if the entire farms are used. The third PC farm which consists of 40 sets of 2 800-MHz Pentium III processors has been set up for DST production. Two tape servers have been set up to distribute data read from raw and/or DST tapes. The tape servers are connected to PC farm disk servers via GbE (Giga bit Ethernet).