Torus interconnect

A torus interconnect is a switch-less network topology for connecting processing nodes in a parallel computer system.

The animation illustrates how a two dimension torus is generated from a rectangle by connecting its two pairs of opposite edges.

The above ruleset shows that each higher dimension adds another pair of nearest neighbor connections to each node.

Fujitsu's K computer and the PRIMEHPC FX10 use a proprietary three-dimensional torus 3D mesh interconnect called Tofu.

[2] Sandeep Palur and Dr. Ioan Raicu from Illinois Institute of Technology conducted experiments to simulate 3D torus performance.

Diagram of a 3-dimensional torus interconnect. It is not limited to 8 nodes but can consist of any number of nodes in a similar rectilinear array.