1. In a multiple computer system comprising a plurality of computers, each including a local processor and a local memory coupled with the local processor, and including a first computer and a second computer interconnected via a communications link or network operating in a replicated shared memory arrangement, the local memory(ies) having a local memory location(s) and/or a memory value(s), a method of classifying said local memory(ies) comprising: classifying said local memories into a first category of memory locations each of which contains or stores non-address values or content; and classifying said local memories into a second category of memory locations each of which contains or stores memory address values or memory address contents of other memory location(s).