Using Via Abstraction

If your design uses multi-cut via masters in which the cut spacing is smaller than the minimum spacing rule, you can instruct Space-based Router and Chip Optimizer to treat vias as abstracts. When set true, via shapes inside the via master are not checked but bounding box-to-bounding box spacing is checked. By default, all via master shapes are checked against spacing rules. To treat vias as abstracts, use

set_treat_via_as_abstract -abstract true

Related Topics

Preparing the Routing Environment

Routing Vias

Determining Which Via the Router Will Use

Controlling Via Stacking