Summit
IBM Power System AC922 supercomputer used for scientific research at Oak Ridge National Laboratory. It was decommissioned in November 2024; the performance figures preserve its historical TOP500 configuration.
What it runs and how to get time
From the operatorBenchmark and hardware
Source per value- Rank Position in the TOP500 edition named in the Edition column. Historic systems keep the rank of the edition where they last appeared.
- 9 1
- Rmax PFLOP/s Measured double-precision LINPACK (HPL) performance of the listed configuration. Older TFLOP/s and GFLOP/s figures are converted to PFLOP/s.
- 148.6 1
- Rpeak PFLOP/s Theoretical peak double-precision performance of the listed configuration. This is not AI or mixed-precision throughput.
- 200.79 1
- HPL efficiency % Rmax divided by Rpeak: the share of theoretical peak the system delivered on LINPACK. Computed from the two sourced figures.
- 74 1
- Power kW Power reported for the benchmark run. Measurement boundaries vary by site; this is not facility power, TDP or cooling capacity. Empty when the system does not report it.
- 10,096 1
- Efficiency GFLOP/s per W Rmax per watt of reported benchmark power, computed from the two sourced figures (GFLOP/s per W). Empty when power is not reported.
- 14.72 1
- Site Host or operator named by TOP500 for the installation.
- DOE/SC/Oak Ridge National Laboratory 1
- Region World region of the installation country (grouping applied by this site).
- Americas 1
- Vendor Manufacturer or system supplier exactly as submitted to TOP500.
- IBM 1
- Vendor group Supplier grouped for filtering. Bull is the Eviden/Atos line; Other covers single-system suppliers.
- Other 1
- System model Hardware platform in the cited TOP500 edition.
- IBM Power System AC922 1
- Processor CPU description in the cited TOP500 edition; clock and core count refer to the processor model.
- IBM POWER9 22C 3.07GHz 1
- Accelerator vendor Maker of the accelerator. None listed means TOP500 names no accelerator for the system.
- None listed 1
- Interconnect Network fabric exactly as listed in the cited TOP500 edition.
- Dual-rail Mellanox EDR Infiniband 1
- Fabric Interconnect family derived from the listed interconnect (grouping applied by this site).
- InfiniBand 1
- Cores cores Total cores submitted to TOP500, including accelerator cores where TOP500 counts them. Not a CPU-only count and not a CUDA-core count.
- 2,414,592 1
- Installed Installation year reported in the TOP500 system record. Not necessarily the year of production acceptance.
- 2018 1
- Edition TOP500 edition (YYYY-MM) that supplies the ranking and benchmark data. A historic edition does not assert current operating status.
- 2024-06 1
- OS Operating system from the TOP500 system record.
- RHEL 7.4 1
- TOP500 record Link to the TOP500 database record for this exact submission.
- https://www.top500.org/system/179397/ 1
Sources
- TOP500 system record accessed 2026-11-11
- olcf.ornl.gov (operator page) accessed 2026-11-11