High-End Computing Capability
Computing power to answer NASA's complex science and engineering questions
Athena Supercomputer
Athena is a petascale supercomputer housed in the Modular Supercomputing Facility (MSF) at NASA's Ames Research Center. The system was released to NAS users at the end of December 2025.
System Architecture
- Manufacturer: HPE
- 4 HPE Cray EX4000 racks
- 20.132 Pflop/s theoretical peak
- Total cores: 262,144
- Total memory: 786 TB
| AMD Turin Nodes | |
|---|---|
| Number of Nodes | 1,024 |
| Processor/Node | 128-core EPYC 9745 processor |
| Processor Speed | 2.4 GHz |
| Cache | 32 MB shared among 16 cores in a core complex; 512 MB per node |
| Memory Type | DDR5 |
| Memory Size | 768 GB per node |
| Inter-node Network | 2 Cray Slingshot-11 Cassini network interface cards per node |
Operating Environment
- Operating System: Tri-Lab Operating System Stack (TOSS)
- Job Scheduler: Altair PBS Professional
- Compilers: Cray, Intel, GNU, and AMD Compilers
- MPI: Cray MPICH
Quick Links
- News
- User Documentation
- myNAS User Portal
- System Status
- FAQ
- Get Accounts
- New User Orientation
- Training Webinars
Can't find what you're looking for? NAS User Support is available 24x7x365:
(800) 331-8737
(650) 604-4444
support@nas.nasa.gov
Now at HECC
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