Rockfish
Welcome to Rockfish
Rockfish is a community-shared cluster at Johns Hopkins University and housed at Maryland Advanced Research and Computer Center in Baltimore. It follows the “condominium model” with three main units. The first unit is based on an NSF Major Research Infrastructure grant, a second unit contains mainly medium-sized condos (for example DURIP/DoD, Deans’ contributions condos), and the last unit is a collection of individual research groups condos. All three units are shared, with no physical separation, by all users.
Rockfish has 45,072 cores (841 nodes), a combined theoretical performance of 3.3 PFLOPs and Rmax of 2.1 PFLOPs. Rockfish has three parallel file systems (GPFS) with a total of ~13PB of usable space. The Rockfish cluster has Mellanox Infinidat HDR100 connectivity (1:1.5 topology)
The Rockfish Cluster was ranked #443 in top500.org (November 2023).
Access technical documentation that provides a comprehensive guide to using the Rockfish Cluster.
Access the Coldfront Portal to create user accounts, request PI allocations, and manage projects
Compute Hardware
| Current # Nodes | Type | CPU | GPU | RAM | Storage | Total Cores |
|---|---|---|---|---|---|---|
| 720 | Compute | Intel Xeon Gold Cascade Lake 6248R | N/A | 192GB DDR4 2933MHz | 1TB NVMe SSD | 36,864 |
| 46 | Compute | Intel Xeon Gold Sapphire Rapids 6448Y | N/A | 256GB DDR5 4800MHz | 2TB NVMe SSD | 2,944 |
| 25 | Large Memory | Intel Xeon Gold Cascade Lake 6248R | N/A | 1.5TB DDR4 2933MHz | 1TB NVMe SSD | 1200 |
| 18 | GPU Nodes | Intel Xeon Gold Cascade Lake 6248R | 4x Nvidia A100 40GB | 192GB DDR4 2933MHz | 1TB NVMe SSD | 864 |
| 10 | GPU Nodes | Intel Xeon Gold Icy Lake 6338 | 4x Nvidia A100 80GB | 256GB DDR4 3200MHz | 1.6TB NVMe SSD | 640 |
| 4 | GPU L40S | Intel Xeon Gold 6338 | 8x Nvidia L40S 48GB | 512GB DDR4 3200MHz | 3.5TB NVMe SSD | 256 |
| 18 | Faster compute | Intel Xeon Gold Emerald Rapids, Platinum 8592+ | N/A | 512GB TruDDR5 5600MHz | 1.8TB NVMe SSD | 2,304 |
| 841 | 45,072 |