All PC nodes at the Utah Emulab cluster have at least four ethernet ports connected to the experiment switch fabric. All of the roughly 500 nodes and over 2000 ports can be connected in arbitrary ways by setting up VLANs on the switches via remote configuration tools. The current PC and switch topology is shown in the switch fabric diagram. One additional Ethernet port on each PC is connected to the core router, and is the public facing interface. Thus each PC has a full duplex 100Mbps (pc3000) or 1Gps (all others) connection to the servers. These connections are for dumping data off of the nodes and such, without interfering with the experimental interfaces. The only impact on the node is processor and disk use, and bandwidth on the PCI bus.
A description of all of the current node types follows:
d430s
There are 160 d430 nodes (pc701-pc860) consisting of:
- Dell Poweredge R430
- Two 2.4 GHz 64-bit 8-Core Xeon E5-2630v3 processors, 8.0 GT/s, 20 MB cache, VT-x, VT-d and EPT support
- 64 GB 2133 MT/s DDR4 RAM (8 x 8GB modules)
- 2-4 Intel i350 GbE NICs for experimental use
- 2-4 Intel X710 10 GbE NICs for experimental use
- 200 GB 6Gbps SATA SSD, 2 x 1 TB 7200 RPM 6 Gbps SATA disks.
d820s
There are 16 d820 PC nodes (pc601-pc616) consisting of:
- Dell Poweredge R820
- Four 2.2 GHz 64-bit 8-Core Xeon "Sandy Bridge" processors, 7.20 GT/s bus speed, 16 MB cache, VT-x and VT-d support
- 128 GB 1333 MHz DDR3 RAM (8 x 16GB modules)
- 4 Broadcom NetXtreme BCM5720C GbE NICs builtin to motherboard (only one in use)
- 2 dual-port Intel X520 PRO/10GbE PCI-Express NICs
- 250GB 7200 rpm SATA disk, 6 x 600GB 10000 rpm SAS disks
d710s
There are 160 d710 PC nodes (pc401-pc560) consisting of:
- Dell Poweredge R710
- 2.4 GHz 64-bit Quad Core Xeon E5530 "Nehalem" processor, 5.86 GT/s bus speed, 8 MB L3 cache, VT support
- 12 GB 1066 MHz DDR2 RAM (6 x 2GB modules)
- 4 Broadcom NetXtreme II BCM5709 rev C GbE NICs builtin to motherboard
- 2 Broadcom NetXtreme II BCM5709 rev C GbE NICs in dual-port PCIe x4 expansion card (one NIC is the control net)
- one 500GB and one 250GB 7200 rpm SATA disks
pc3000s
There are 160 pc3000 PC nodes (pc201-pc360) consisting of:
- Dell Poweredge 2850
- 3.0 GHz 64-bit Xeon processors, 800Mhz FSB
- 2GB 400Mhz DDR2 RAM
- Multiple PCI-X 64/133 and 64/100 busses
- 6 10/100/1000 Intel NICs spread across the busses (one NIC is the control net).
- 2 x 146GB 10,000 RPM SCSI disks
- CD-ROM drive (GCR-82840N.)