PhantomNet can allocate experiments on any one of several federated clusters.
8.1 Apt Cluster
The main Apt cluster is housed in the University of Utah’s Downtown Data Center in Salt Lake City, Utah. It contains two classes of nodes:
128 nodes (Sandy Bridge, 8 cores)
1x Xeon E5-2450 processor (8 cores, 2.1Ghz)
16GB Memory (4 x 2GB RDIMMs, 1.6Ghz)
4 x 500GB 7.2K SATA Drives (RAID5)
1GbE Dual port embedded NIC (Broadcom)
1 x Mellanox MX354A Dual port FDR CX3 adapter w/1 x QSA adapter
64 nodes (Ivy Bridge, 16 cores)
2 x Xeon E5-2650v2 processors (8 cores each, 2.6Ghz)
64GB Memory (8 x 8GB DDR-3 RDIMMs, 1.86Ghz)
2 x 1TB SATA 3.5” 7.2K rpm hard drives
4 x 1GbE embedded Ethernet Ports (Broadcom)
1 x Intel X520 PCIe Dual port 10Gb Ethernet NIC
1 x Mellanox FDR CX3 Single port mezz card
All nodes are connected to three networks with one interface each:
A 1 Gbps Ethernet “control network”—
this network is used for remote access, experiment management, etc., and is connected to the public Internet. When you log in to nodes in your experiment using ssh, this is the network you are using. You should not use this network as part of the experiments you run in Apt.
A “flexible fabric” that can run up to 56 Gbps and runs either FDR Infiniband or Ethernet. This fabric uses NICs and switches with Mellanox’s VPI technology. This means that we can, on demand, configure each port to be either FDR Inifiniband or 40 Gbps (or even non-standard 56 Gbps) Ethernet. This fabric consists of seven edge switches (Mellanox SX6036G) with 28 connected nodes each. There are two core switches (also SX6036G), and each edge switch connects to both cores with a 3.5:1 blocking factor. This fabric is ideal if you need very low latency, Infiniband, or a few, high-bandwidth Ethernet links.
A 10 Gbps Ethernet “commodity fabric”. One the r320 nodes, a port on the Mellanox NIC (permanently set to Ethernet mode) is used to connect to this fabric; on the c6220 nodes, a dedicated Intel 10 Gbps NIC is used. This fabric is built from two Dell Z9000 switches, each of which has 96 nodes connected to it. It is idea for creating large LANs: each of the two switches has full bisection bandwidth for its 96 ports, and there is a 3.5:1 blocking factor between the two switches.
8.2 IG-DDC Cluster
This small cluster is an InstaGENI Rack housed in the University of Utah’s Downtown Data Center. It has nodes of only a single type:
33 nodes (Sandy Bridge, 16 cores)
2x Xeon E5-2450 processors (8 cores each, 2.1Ghz)
48GB Memory (6 x 8GB RDIMMs, 1.6Ghz)
1 x 1TB 7.2K SATA Drive
1GbE 4-port embedded NIC
It has two network fabrics:
A 1 Gbps “control network”. This is used for remote access, and should not be used for experiments.
A 1 Gbps “experiment network”. Each node has three interfaces on this network, which is built from a single HP Procurve 5406 switch. OpenFlow is available on this network.