Figure 8: Geometry for prototype machine. Each station contains 4 processors.
The NUMAchine prototype (currently under construction) consists of a 64-processor system using two levels of rings, with the 4x4 geometry shown in Figure 8. The initial CPU boards will utilize 150 MHz MIPS R4400 processors, with 1 MB of L2 cache. The Network Cache on each station will contain at least 4 MB of memory.