Rockfish a community-shared cluster at Johns Hopkins University and housed at Maryland Advanced Research and Computing 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-size 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 34,128 cores (711 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 Infinidad HDR100 connectivity (1:1.5 topology).

The Rockfish Cluster was ranked #414 in top500.org at 1.9TFLOPs (June 2022) and 17th among US academic institutions.