By builder
Hitachi supercomputers
Hitachi has built 2 machines that reached number one on the TOP500, holding the top spot across 2 lists for operators in Japan. The fastest was CP-PACS/2048 at 368.2 GFlop/s.
Machines
Every list held
| List | System | Operator |
|---|---|---|
| November 1996 | CP-PACS/2048 | University of Tsukuba |
| June 1996 | SR2201/1024 | University of Tokyo |