memory locality domain. An abstract representation of physical memory, used within the IRIX operating system. An MLD is a source for memory allocation having a prescribed type of memory locality, for example, the two nodes in one corner of a hypercube can yield memory that is close to either node.
Two tilings are called mld (mutually locally derivable), if one is obtained from the other in a unique way by local rules, and vice versa. For example, a tiling by Penrose Rhomb is obtained from a Robinson Triangle tiling easily: just delete the shortest and longest edges, keeping only the medium ones yields the Penrose Rhomb tiling; and vice versa: in a Penrose Rhomb tiling, add in each fat rhomb the long diagonal, and in each thin rhomb add the short diagonal. This gives again the Robinson Triangle tiling.