The No. 1 spot on the GREEN500 remains Henri at the Flatiron Institute in New York, USA. The system achieved an energy efficiency rating of 65.40 GFlops/Watt while producing an HPL score of 2.88 PFlop/s. Henri is a Lenovo ThinkSystem SR670 with Intel Xeon Platinum and NVIDIA H100, it has 8,288 total cores, and it ranks No. 293 on the TOP500 list.
The Frontier Test & Development (TDS) system at ORNL in Tennessee, USA, claims the No. 2 spot with an energy efficiency rating of 62.68 GFlops/Watt and an HPL score of 19.2 PFlop/s. The TDS is basically just one rack identical to the actual Frontier system and utilizes 120,832 total cores.
The No. 3 spot was taken by the Adastra system, which is housed at GENCI-CINES in France. The system achieved an energy efficiency rating of 58.02 GFlops/Watt and an impressive HPL score of 46.1 PFlop/s. Adastra has 319,072 total cores.
Additionally, just like on the last list, the actual Frontier system at No. 1 on the TOP500 deserves an honorable mention here for its achievements in energy efficiency. Despite more than doubling the HPL score of the Aurora system at the No. 2 spot on the TOP500, Frontier took the No. 8 spot on the GREEN500 with an energy efficiency of 52.59 GFlops/Watts.
Considering this system was the first machine to achieve exascale, Frontier is proof that power does not need to be sacrificed to achieve an impressive energy efficiency rating.
Finally, being green in supercomputing has truly become a global endeavor. The top 10 spots of the GREEN500 are occupied by 8 different countries: United States (3 times), France, Australia,Sweden, Spain, Finland, Germany, and South Korea.
Rmax and Rpeak values are in PFlop/s. For more details
about other fields, check the TOP500 description.
Rpeak values are calculated using the advertised clock rate of the CPU. For the
efficiency of the systems you
should take into account the Turbo CPU clock rate where it applies.