University Communications
UW High Energy Physics

 

CMS-T2 Resources

Computing

The High Energy Physics group at the University of Wisconsin strives to maintain an information technology infrastructure that is trouble-free, secure, highly available and well understood. The table below provides a summary of the available computing (and storage) resources.
  CPU CPUS/class kSI2K/class dCache/class (TB)
g4-g7 2 x 2.8 GHz Xeon 114 13.90 40.5
g8 2 x 3.0 GHz Xeon 10 12.85 6
g9-g10 4 x 1.8 GHz Opteron 276 345.00 45
g12 8 x 2.6 GHz Xeon 256 698.36 72
g13 8 x 2.3 GHz Xeon 32 n/a -
g14 8 x 3.0 GHz Xeon 256 1007.36 128
g16 8 x 3.0 GHz Xeon 448 1762.88 -
s5 2 x 2.8 GHz Xeon 18 - 40.50
s15 8 x 2.6 GHz Xeon 80 - 174
  Total ~1030 ~3800 ~525
We use AFS file sharing and Condor batch computing software to implement a high throughput Linux computing environment. Opportunistic computing resources from the Grid Laboratory of Wisconsin (GLOW) and Computer Science (CS) department provide the potential for the utilization of a total of over 2300 Linux CPUs. Sharing of Condor Resources : [GLOW pool] [CHTC pool] [CS pool]

Network

Our Grid Network is implemented using a Cisco Catalyst 3750G-16TD switch stack (10 Gbps uplink to the Internet) and our Staff Network is implemented using a Cisco Catalyst 4503 switch (2 Gbps uplink) at the core, with gigabit ethernet over fiber trunks fanning out to Cisco Catalyst 3750 switches.

Our older compute servers are 1U rack-mount systems with Supermicro or Intel motherboards, dual Xeon CPUs and gigabit ethernet. Our newer generations of compute servers are 1U rack-mount 1.8 GHz dual/dual (four CPU) Opteron based Supermicro systems with gigabit ethernet. See UW HEP Network activities : [GridNet Internet IO] [StaffNet Internet IO] [CampusNet].

Storage

The storage system is dCache based and managed by SRM. A total storage space of 226TB is distributed across many dCache storage servers : which are (a) dual Xeon CPU based systems with 5 TB Apple Xserve RAIDs attached via Apple's PCI-X fibre channel card and (b) around 207 compute nodes/systems (see table above) containing standard ATA disks. DCache resources info : [layout] [Space] [Disks] [Load] [IO Usage].