The parallel algorithms of layout parameter extraction on Transputer parallel accelerator in VLSI CAD are described.In the algorithms the region parallelism of graphic operation is utilized.The layout is partitioned into a number of slices and each slice is sent to a processor.The parameter extraction is parallelly implemented on all silces.In order to keep load balance between processors
every partitioned slice contains the same number of graph vectors.The computional results indicate that the load balance between processors is quite satisfactory and the execution time is remarkably reduced.Since the Transputer parallel accelerator possesses excellent ratio of performance to cost
the realization of parallel parameter extraction is of significant value.