As stated in the following paper,
"Balancing buffer utilization in meshes using a “restricted area” concept, by P.-J. Chuang, J.-T. Chen, and Y.-T. Jiang, in IEEE Trans. Parallel Distrib. Syst., vol. 13, no. 8, 2002"
the region of adaptivity tends to handle the most concentrated network load which can also be translated as the highest buffer utilization.
However, according to the results presented in Fig. 6, the highest buffer utilization for unbalanced routing algorithms such as West-First or North-Last occurs at the least adaptive region of the network (i.e. West half or North half, respectively) which is really confusing.
Which one is correct, the theory or the results?
My own results obtained using the BookSim network simulator conforms to the theory. Except from the West-First results which is the same as Fig. 6(a) of the above paper.
Any explanation or hint is highly appreciated!