The 3D torus architecture of the IBM Blue Gene/L machine. There are dedicated interconnections between nearest neighbors on a 3D toroidal grid. This minimizes communication overhead between nearest neighbors, and is an ideal solution for 3D image processing tasks.
Rao et al. BMC Cell Biology 2007 8(Suppl 1):S9 doi:10.1186/1471-2121-8-S1-S9