Parts/Interconnect/Hitachi 3D hyper-crossbar
Why this part
A compromise between the crossbar's perfection and the mesh's affordability: nodes are arranged on three axes and a full crossbar connects every node along each axis, so any pair is at most three hops apart while the switch cost stays proportional to the cube root rather than the square. CP-PACS ran lattice QCD, which communicates with near neighbours in a regular pattern, and a topology chosen to match the physics rather than the other way round is the whole point of a machine designed by its own users.
Systems using this part
- Systems
- 2
- Rmax underneath
- 588.6 GFlop/s
- Units recorded
- -
0 of 2 edges disclose a quantity
| System | Role | Country | Units | System Rmax | Supplied by | Rank |
|---|---|---|---|---|---|---|
| CP-PACS 1996-10 | Interconnect | Japan | - | 368.2 GFlop/s | Hitachi | #1 → |
| Hitachi SR2201/1024 1996 | Interconnect | Japan | - | 220.4 GFlop/s | Hitachi | #1 → |
“Units recorded” sums only the edges where a public source states a quantity. It is a floor, not a total, and should never be read as installed base.