Table of NERSC Resources
[NERSC Technical Documentation for Users]
NERSC Computational Systems
| System Name | System Type | CPU | Computational Pool | Node Interconnect | Scratch Disk | Avg. Power (KW) | |||||||
| Type | Speed (GHz) | Nodes | Cores per Node | Total Cores | Flops per Core (Gflops/sec) | Peak Performance (Tflops/sec) | Aggregate Memory |
Avg. Memory/core |
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|
Cori |
Cray XC40 |
Intel Haswell Intel KNL |
2.3 1.4 |
2,388 9,688 |
32 68 |
76,416 658,784 |
36.8 44.8 |
2,812 29,514 |
298.5 TB 1.06 PB |
4 GB DDR: 1.41 GB; MCDRAM: 0.23 GB |
Aries | 28 PB (global) | 4,200 |
|
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NERSC Data Storage Resources
| File System | Path | Type | Peak Performance | Default Quota | Backed Up? | Purge Policy |
| Global Homes | $HOME | GPFS file system | Not intended IO jobs |
40 GB |
Yes | Not purged |
| Project | /project/projectdirs/projectname | GPFS file system | 130 GB/Second | 1 TB 1,000,000 Inodes |
No | Not purged |
| Common | /global/common/software/projectname | GPFS file system | Intended for software stacks | 10 GB 1,000,000 inodes | No | No purged |
| Cori local scratch | $SCRATCH (on Cori), $CSCRATCH (from other systems) | Lustre file system | 700 GB/Second | 20 TB 10,000,000 Inodes |
No | Files not accessed for 12 weeks are deleted |
| Cori Burst Buffer | $DW_JOB_STRIPED, $DW_PERSISTENT_STRIPED_XXX | DataWarp (FLASH file system) | 1.7 TB/s, 28M IOP/s | none | No | Data is deleted at the end of every job, or at the end of the lifetime of the persistent reservation |
| Archive (HPSS) | Typically accessed via hsi or htar inside of NERSC | HPSS (Tape Archive) | 50 GB/s to disk cache | Allocation dependent | No | Not purged |
For more details on the best usage of these file systems see the NERSC Data Storage Resources page.
