Initially, VTAM only allowed communication between mainframes and peripheral equipment such as terminals, distributed processors and minicomputers.
2.
Architectural experiments are continuing in a number of directions, e . g . the Cyclops64 system uses a " supercomputer on a chip " approach, in a direction away from the use of massive distributed processors.
3.
Centralized distributed algorithms can often be considered as hybrid algorithms, consisting of an individual algorithm ( run on each distributed processor ), and a combining algorithm ( run on a centralized distributor ) these correspond respectively to running the entire algorithm on one processor, or running the entire computation on the distributor, combining trivial results ( a one-element data set from each processor ).