Linux Cluster Hardware
Hardware description of euler.phys.cmu.edu, the small linux cluster
operated by the Widom research group in the CMU Physics Department.
Networking
The head node is named euler.phys.cmu.edu, with a webserver alias
alloy.phys.cmu.edu hosting the alloy database. The file server is
eulers.phys.cmu.edu. Authentication is via internal user names
and passwords and via the CMU Andrew system.
All nodes are connected internally by a 10 gigabit
network switch although each node may be limited by its own network
interface speed if lower. Nodes euler and eulers are connected to the Wean
Hall public network.
Nodes
| Name | Chip | NCPU x Ncore |
CPU (GHz) | FSB (MHz) |
L2 cache (MB) | Mem (GB) | Disk (GB) |
| euler.phys | Xeon Gold 5122 | 2 x 4 | 3.6 |
2666 | 17 | 96 | 240 SSD |
| eulers.phys (old) | Xeon E5-2630 | 2 x 6 | 2.3 |
1333 | 15 | 32 | 500+23000 |
| eulers.phys (new) | Xeon Silver 4314 | 1 x 16 | 2.4 |
3200 | 16 | 128 | 960 SSD+51000+50000 |
| n01.lc.phys | Xeon X5675 | 2 x 6 | 3.06 |
1333 | 12 | 48 | 500 |
| n02.lc.phys | Xeon X5675 | 2 x 6 | 3.06 |
1333 | 12 | 48 | 500 |
| n03.lc.phys | Xeon X5675 | 2 x 6 | 3.06 |
1333 | 12 | 48 | 500 |
| n04.lc.phys | Xeon X5675 | 2 x 6 | 3.06 |
1333 | 12 | 48 | 500 |
| n05.lc.phys | Xeon X5675 | 2 x 6 | 3.06 |
1333 | 12 | 48 | 500 |
| n06.lc.phys | Xeon X5675 | 2 x 6 | 3.06 |
1333 | 12 | 48 | 500 |
| n07.lc.phys | Xeon E5-2670 | 2 x 8 | 2.60 |
1600 | 20 | 64 | 500 |
| n08.lc.phys | Xeon E5-2670 | 2 x 8 | 2.60 |
1600 | 20 | 64 | 500 |
| n09.lc.phys | Xeon E5-2670 | 2 x 8 | 2.60 |
1600 | 20 | 64 | 500 |
| n10.lc.phys | Xeon E5-2670 | 2 x 8 | 2.60 |
1600 | 20 | 64 | 500 |
| n11.lc.phys | Xeon E5-2680v3 | 2 x 12 | 2.50 |
2133 | 30 | 64 | 1000 |
| n12.lc.phys | Xeon E5-2650v4 | 2 x 12 | 2.20 |
2400 | 30 | 128 | 240 SSD |
| n13.lc.phys | Xeon E5-2650v4 | 2 x 12 | 2.20 |
2400 | 30 | 128 | 240 SSD |
| n14.lc.phys | Xeon Gold 5218R | 2 x 20 | 2.10 |
2667 | 27.5 | 96 | 500 SSD |
| n15.lc.phys | Xeon Gold 5218R | 2 x 20 | 2.10 |
2667 | 27.5 | 96 | 500 SSD |
| n16.lc.phys | Xeon Gold 5218R | 2 x 20 | 2.10 |
2667 | 27.5 | 96 | 500 SSD |
| g01.lc.phys | Xeon E5-2660v3 | 2 x 10 | 2.60 |
2133 | 25 | 64 | 500 |
| g02.lc.phys | Xeon E5-2650v2 | 2 x 8 | 2.60 |
1866 | 20 | 64 | 250 |
| Total 21 | | 380 | |
| | 1378 | 10220+24000 |
GPU
g01 has one Tesla K80 for running GPU-accelerated VASP. g02 has two Tesla K40 GPU's.
Storage
The file server eulers has 51TB on a RAID array serving
the /home directories on the cluster. The file server runs a
backup program tob, backing up to the head node euler. Usage is
described in /home/alloy.db/HOWTO.restore. Each compute node
has temporary free disk space in /tmp.