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Fifth Great Lakes Symposium on VLSI (GLSVLSI'95)
On locally optimal breaking of nondisjoint cyclic vertical constraints in VLSI channel routing
The State University of New York at Buffalo
March 16-March 18
ISBN: 0-8186-7035-5
A.D. Johnson, Dept. of Electr. Eng., Toledo Univ., OH, USA
Locally optimal breaking strategy was already developed for disjoint directed circuits in the vertical constraint graph. The paper reports extensions to two classes of nondisjoint circuits: with a common vertex, and with a common path. The significance of this is that the demonstration of general applicability of the locally optimal breaking concept opens a new approach to improving the channel router heuristics for automatic and interactive routers, using parallel architectures.
Index Terms:
network routing; circuit layout CAD; integrated circuit layout; graph theory; VLSI; locally optimal breaking strategy; nondisjoint cyclic vertical constraints; VLSI channel routing; vertical constraint graph; nondisjoint circuits; common vertex; common path; channel router heuristics; automatic routers; interactive routers; parallel architectures
Citation:
A.D. Johnson, "On locally optimal breaking of nondisjoint cyclic vertical constraints in VLSI channel routing," glsvlsi, pp.204, Fifth Great Lakes Symposium on VLSI (GLSVLSI'95), 1995
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