SDSC Expanse CPU
Resource Type
Latest Status

Expanse will be a Dell integrated compute cluster, with AMD Rome processors, interconnected with Mellanox HDR InfiniBand in a hybrid fat-tree topology. There are 728 compute nodes, each with two 64-core AMD EPYC 7742 (Rome) processors for a total of 93,184 cores. They will feature 1TB of NVMe storage and 256GB of DRAM per node. Full bisection bandwidth will be available at rack level (56 nodes) with HDR100 connectivity to each node. HDR200 switches are used at the rack level and there will be 3:1 oversubscription cross-rack. In addition, Expanse also has four 2 TB large memory nodes. The system will also feature 12PB of Lustre based performance storage (140GB/s aggregate), and 7PB of Ceph based object storage.

Is an ACCESS Allocated Production Compute resource
Resource supports community software areas for users to share software with other users
Resource offers discounted job queues where running jobs can be preempted
Resource supports community accounts for science gateways
Resource support community software areas for science gateways to share software on a resource
General compute use
Resource is allocated by ACCESS
Specialized analysis nodes with large memory
has advance reservations
Support for Science Gateways
Run Jobs and Workflows on ACCESS Resources from a Single Entry Point
An intuitive, innovative, and interactive interface to remote computing resources
Organization Name
San Diego Supercomputer Center
Global Resource ID