Hardware Specification
Machine Types
The cluster is composed of 3 types of equipment:
- Storage server (NAS)
- Network switches
- Computing servers (head node + computing nodes)
Head Node
| Item |
Spec |
| CPU |
AMD EPYC 7513 |
| Sockets |
1 |
| Cores |
32 |
| RAM (GB) |
128 |
The head node does not run simulations. It handles user login (SSH), job scheduling (SLURM), and file management.
NAS (Network Attached Storage)
| Item |
Spec |
| Model |
Synology RS1221RP+ |
| Expansion |
Synology RX418 |
| CPU |
AMD Ryzen V1500B (4 cores, 2.2 GHz) |
| RAM |
4 GB |
| Drives |
6x 14.6 TB HDD |
| RAID |
RAID 10 (4 drives) + 2 hot spares |
| Total pool |
29.1 TB |
| PSU |
Dual (redundant) |
| Network |
20 Gbps bond + 1 Gbps LAN |
Volumes:
| Volume |
Purpose |
Used |
Free |
| Volume 1 |
DSM packages |
5.4 GB |
954.6 GB |
| Volume 4 |
User storage |
12 TB |
15 TB |
| Volume 5 |
Software repository |
178 GB |
782 GB |
Network
| Equipment |
Detail |
| Ethernet switch |
Netgear XS724EM (10 GbE) — inter-node and NAS traffic |
| InfiniBand switch |
Mellanox SB7890 — 100 Gbps InfiniBand for MPI jobs. All nodes except t02 are connected. |
| NAS bond |
20 Gbps (bonded), for storage access |
| Router |
One per lab room, provides a single gateway IP whitelisted by the cluster |
Computing Nodes
| Hostname |
CPU |
Sockets |
Cores |
RAM (GB) |
Power (W) |
Rel. Perf. |
Remark |
| t01 |
AMD EPYC 7713 |
1 |
64 |
128 |
600 |
1.0 |
|
| t02 |
AMD EPYC 7713 |
1 |
64 |
128 |
600 |
1.0 |
No InfiniBand |
| t03 |
AMD EPYC 7H12 |
2 |
128 |
256 |
1000 |
1.6 |
Powered off (power limit) |
| t04 |
AMD EPYC 7H12 |
2 |
128 |
256 |
1000 |
1.6 |
Powered off (power limit) |
| t05 |
AMD EPYC 7713 |
2 |
128 |
256 |
800 |
1.8 |
Powered off (power limit) |
| t06 |
AMD EPYC 7713 |
2 |
128 |
256 |
800 |
1.8 |
|
| t07 |
AMD EPYC 7713 |
2 |
128 |
256 |
800 |
1.8 |
|
| t08 |
AMD EPYC 7713 |
2 |
128 |
256 |
800 |
1.8 |
|
| t09 |
AMD EPYC 7713 |
2 |
128 |
256 |
800 |
1.8 |
|
| t10 |
AMD EPYC 9554 |
2 |
128 |
768 |
1000 |
3.5 |
|
| t11 |
AMD EPYC 9554 |
2 |
128 |
768 |
1000 |
3.5 |
|
| t12 |
AMD EPYC 9554 |
2 |
128 |
768 |
1000 |
3.5 |
|
| t13 |
AMD EPYC 9554 |
2 |
128 |
768 |
1000 |
3.5 |
|
| t14 |
AMD EPYC 9554 |
2 |
128 |
768 |
1000 |
3.5 |
Powered off |
Relative performance: Speed relative to t01 for RANS calculations. More cores reduce total computation time, but per-core efficiency decreases.