VLSI Design

Research Article

FastRoute: An Efficient and High-Quality Global Router

Algorithm 2

Multisource multi-sink maze routing algorithm.
     for all grid points
  Find subtree (contains ) and (contains ) after
  removing tree-edge ( )
  Set and , for all grid points on
  
  Set up a priority queue with all grid points on
  Mark all grid points on as sink point
      Extract-Min( )
  while   is not sink point
     for  each neighbor grid point of
       if  
 (10)    
 (11)    if   is in
 (12)      Update
 (13)    else
 (14)      Insert into
 (15)   Extract-Min( )
 (16) Trace back from using to find the shortest path from
     to