The TOP500 list has incorporated the High-Performance Conjugate Gradient (HPCG) benchmark results, which provide an alternative metric for assessing supercomputer performance. This score is meant to complement the HPL measurement to give a fuller understanding of the machine.
Supercomputer Fugaku remains the leader on the HPCG benchmark with 16 PFlop/s.
The DOE system Frontier at ORNL claims the second position with 14.05 HPCG-Pflop/s.
The third position was captured by the upgraded LUMI system with 3.40 HPCG-petaflops.
On the HPL-MxP (formally HPL-AI) benchmark, which measures performance for mixed- precision calculation, Frontier already demonstrated 9.95 Exaflops! The HPL-MxP benchmark seeks to highlight the use of mixed precision computations. Traditional HPC uses 64-bit floating point computations. Today we see hardware with various levels of floating point precisions, 32-bit, 16-bit, and even 8-bit. The HPL-MxP benchmark demonstrates that by using mixed precision during the computation much higher performance is possible (see the Top 5 from the HPL-MxP benchmark), and using mathematical techniques, the same accuracy can be computed with the mixed precision technique when compared with straight 64-bit precision.