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We currently have four classes of compute nodes. Starting with the oldest first we have

Scouts

[1-76], however several have been removed from production in order to make room for newer nodes.

Processors 2x Quad-Core Opteron 2376
Ram 8GB (some have been upgraded to 16 GB)
Hard Drive 1x 80GB Seagate 7200rpm SATA
NIC 0 nVidia MCP55
NIC 1 nVidia MCP55
NIC 2 Broadcom BCM5715
NIC 3 Broadcom BCM5715

Paladins

[1-16]

Processors 2x Hex-Core Intel Xeon X5670
Ram 24GB
Hard Drive 1x 160GB HP 7200rpm SATA
Infiniband Mellanox QDR
GPU 1x nVidia Tesla m2050

Mages

[1,3,5,7,9,11] - Why are these numbered like this? There are actually 12 physical machines, however each pair (1 and 2, 3 and 4, etc.) is tied together with external QPI, making them appear as a single node.

Processors 8x 10-Core Xeon E7-8870
Ram 1024GB
Hard Drive 2x 300GB Hitachi 10,000rpm SAS
NIC 0 Broadcom NetXtreme II BCM5709
NIC 1 Broadcom NetXtreme II BCM5709
NIC 2 Broadcom NetXtreme II BCM5709
NIC 3 Broadcom NetXtreme II BCM5709
QDR Infiniband Mellanox Technologies MT27500 Family [ConnectX-3]

Elves

[1-42]

Processors 2x 8-Core Xeon E5-2690
Ram 64GB
Hard Drive 1x 250GB 7,200 RPM SATA
NICs 4x Intel I350
QDR Infiniband QLogic InfiniPath QLE7340

[43-56]

Processors 2x 8-Core Xeon E5-2690
Ram 64GB
Hard Drive 1x 250GB 7,200 RPM SATA
NICs 4x Intel I350
10GbE or QDR Infiniband Mellanox Technologies MT27500 Family [ConnectX-3]

[57-72]

Processors 2x 10-Core Xeon E5-2690 v2
Ram 96GB
Hard Drive 1x 250GB 7,200 RPM SATA
NICs 4x Intel I350
10GbE or QDR Infiniband Mellanox Technologies MT27500 Family [ConnectX-3]

[73-76]

Processors 2x 10-Core Xeon E5-2690 v2
Ram 384GB
Hard Drive 1x 250GB 7,200 RPM SATA
NICs 4x Intel I350
10GbE or QDR Infiniband Mellanox Technologies MT27500 Family [ConnectX-3]