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	N_CPU x N_core	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
eulers.phys	Xeon Silver 4314	1 x 16	2.4	3200	16	128	960+51000+50000
n07	Xeon E5-2670	2 x 8	2.6	1600	20	64	500
n08	Xeon E5-2670	2 x 8	2.6	1600	20	64	500
n09	Xeon E5-2670	2 x 8	2.6	1600	20	64	500
n10	Xeon E5-2670	2 x 8	2.6	1600	20	64	500
n11	Xeon E5-2680v3	2 x 12	2.5	2133	30	64	1000
n12	Xeon E5-2650v4	2 x 12	2.2	2400	30	128	240
n13	Xeon E5-2650v4	2 x 12	2.2	2400	30	128	240
n14	Xeon 5218R	2 x 20	2.1	2667	27.5	96	500
n15	Xeon 5218R	2 x 20	2.1	2667	27.5	96	500
n16	Xeon 5218R	2 x 20	2.1	2667	27.5	96	500
g01	Xeon E5-2660v3	2 x 10	2.6	2133	25	64	500
g02	Xeon E5-2650v2	2 x 8	2.6	2133	25	64	500
n31	Xeon 6526Y	2 x 16	2.8	5200	37.5	256	500
n32	Xeon 6526Y	2 x 16	2.8	5200	37.5	256	500
n33	Xeon 6526Y	2 x 16	2.8	5200	37.5	256	500
n34	Xeon 6526Y	2 x 16	2.8	5200	37.5	256	500
n35	Xeon 6526Y	2 x 16	2.8	5200	37.5	256	500
n36	Xeon 6526Y	2 x 16	2.8	5200	37.5	256	500
n37	Xeon 6526Y	2 x 16	2.8	5200	37.5	256	500
n38	Xeon 6526Y	2 x 16	2.8	5200	37.5	256	500

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.