Systems overview¶
CARC operates several high-performance computing clusters serving disciplines from traditional scientific computing to data analytics, artificial intelligence, and machine learning.
Compute clusters¶
| Cluster | Nodes | CPU cores | GPUs | Interconnect | Notes |
|---|---|---|---|---|---|
| Easley | 65 | 4,160 | 36× NVIDIA L40S (AI/ML) + 8× NVIDIA H100 (double precision) | NVIDIA NDR 800 Gbps InfiniBand | Newest cluster; 23.3 TB total RAM |
| Hopper | 61 | 2,176 | 37× NVIDIA A100 | NVIDIA HDR 400 Gbps InfiniBand | General and GPU-accelerated workloads |
For queue limits and walltimes, see resource limits. Historical specifications for retired systems (Wheeler, Taos, Gibbs, and Xena) are kept in the legacy cluster reference.
Storage¶
CARC provides multiple tiers of high-performance storage:
- 720 TB of all-flash IBM Storage Scale (GPFS) scratch
- 2 PB of BeeGFS working scratch
- 2.4 PB of NetApp enterprise storage, with automated hourly, daily, weekly, and monthly snapshots retained up to four months for user-directed recovery
See storage and backups for how home, project, and scratch spaces work, and resource limits for quotas.
In partnership with UNM Libraries, CARC also supports virtual machine infrastructure for custom research applications, secure data hosting, and flexible computing environments.
Web portals¶
| Portal | URL | Purpose |
|---|---|---|
| JupyterHub (Hopper) | hopper.alliance.unm.edu | Interactive notebooks on Hopper |
| JupyterHub (Easley) | easley.alliance.unm.edu/jupyter | Interactive notebooks on Easley |
| Open OnDemand | ood.alliance.unm.edu | Browser-based files, shells, and interactive apps |
| ColdFront | coldfront.alliance.unm.edu | Project, allocation, and publication management |
| XDMoD | xdmod.alliance.unm.edu | System usage metrics by PI |
| Help desk | support.alliance.unm.edu | Create or manage help tickets |
Status and downtime¶
Check the live monitors directly:
- Cluster login & website status — per-system up/down and response times
- UNM IT alerts — campus-wide IT outage notices
- Network performance — perfSONAR measurements for the CARC network
- Easley external DNS check — worldwide resolution of easley.alliance.unm.edu
- System usage (XDMoD) — utilization metrics by system and principal investigator
Networking¶
CARC systems connect to campus through multiple 10 Gbps links, including a dedicated 10 Gbps connection to UNM's Science DMZ research network. External connectivity includes 100 Gbps connections to ESnet and the Western Regional Network through the Albuquerque Gigapop.
Export control¶
The U.S. Government controls the export of sensitive equipment, software, and technology. Installation of export-controlled software on CARC systems requires prior written approval from UNM Export Control — see the Good Neighbor Use Policy.