EuroCC Portugal

El Capitan Holds No. 1 in New TOP500 List; Europe Gains Ground with JUPITER and MareNostrum 5

The 65th TOP500 list confirms El Capitan at the top; Europe advances with JUPITER Booster and MareNostrum 5.

The 65th edition of the TOP500 list, released in June 2025, confirms El Capitan as the world’s fastest supercomputer. Installed at the Lawrence Livermore National Laboratory (LLNL) in California, the system achieved 1.742 Exaflop/s on the HPL benchmark and also leads the HPCG and HPL-MxP benchmarks, demonstrating exceptional performance across metrics.

Powered by 11 million cores, the HPE Cray EX255a system is based on AMD 4th Gen EPYC processors and AMD Instinct MI300A accelerators, with a notable energy efficiency of 60.3 Gigaflops/Watt.
The top three positions remain unchanged: Frontier at Oak Ridge National Laboratory ranks second with 1.353 Exaflop/s and Aurora, at Argonne National Laboratory, remains third with 1.012 Exaflop/s.

The major newcomer is JUPITER Booster, Europe’s first exascale-class supercomputer, entering directly at No. 4 with a preliminary 793.4 Petaflop/s. Located in Germany at the Forschungszentrum Jülich, this system marks a key milestone for the EuroHPC Joint Undertaking and European HPC sovereignty.
Other notable European systems include:

  • Alps (Switzerland, 8th),
  • LUMI (Finland, 9th),
  • Leonardo (Italy, 10th),
  • MareNostrum 5 (Spain, 14th), which includes 5% Portuguese participation, funded through Portugal’s Recovery and Resilience Plan (PRR).

Portugal’s Deucalion, hosted by the FCT, appears at No. 297, continuing to support national and European research initiatives.
The TOP500 list, updated twice yearly, remains a key reference in tracking global supercomputing performance. Full results are available at top500.org.


[Image credits: Garry McLeod/LLNL]