The top of the list remains largely unchanged, with only two new entries in the top 10, one of which was an existing system that was upgraded with additional capacity.
Two IBM-built supercomputers, Summit and Sierra, installed at the Department of Energy’s Oak Ridge National Laboratory (ORNL) in Tennessee and Lawrence Livermore National Laboratory in California, respectively, retain the first two positions on the list. Both derive their computational power from Power 9 CPUs and NVIDIA V100 GPUs. The Summit system slightly improved its HPL result from six months ago, delivering a record 148.6 petaflops, while the number two Sierra system remains unchanged at 94.6 petaflops.
The Sunway TaihuLight, a system developed by China’s National Research Center of Parallel Computer Engineering & Technology (NRCPC) and installed at the National Supercomputing Center in Wuxi, holds the number three position with 93.0 petaflops. It’s powered by more than 10 million SW26010 processor cores.
At number four is the Tianhe-2A (Milky Way-2A) supercomputer, developed by China’s National University of Defense Technology (NUDT) and deployed at the National Supercomputer Center in Guangzhou. It used a combination of Intel Xeon and Matrix-2000 processors to achieve an HPL result of 61.4 petaflops.
Frontera, the only new supercomputer in the top 10, attained its number five ranking by delivering 23.5 petaflops on HPL. The Dell C6420 system, powered by Intel Xeon Platinum 8280 processors, is installed at the Texas Advanced Computing Center of the University of Texas.