A hierarchical interconnection network, TESH(Tori connected mESHes) allows exploitation of computational locality as well as modular future expansion. To implement a worm-hole routing on TESH, an appropriate method is required to allocate virtual channels on a basic module, since the number of virtual channels depends on allocation policy of inter-BM links. This paper addresses a link allocation policy that minimizes the network diameter and the number of virtual channels. Dynamic communication performances are simulated for TESH and mesh networks. It is seen that the dynamic communication performance of TESH is better than mesh interconnection.
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