Efficient scheduling policies to reduce mean and variance of cycle-time in semiconductor manufacturing plants

S.C.H. Lu, D. Ramaswamy, P.R. Kumar
1994 IEEE transactions on semiconductor manufacturing  
Major fab scheduling problems include how wafers should be released into a fab and how they should be dispatched among machines for processing. A popular practitioners' approach for scheduling the production in a fab is to select from the many empirical scheduling rules available for IC fabs. To quickly select a good enough scheduling rule from a rule library, Hsieh et al. developed a fast simulation tool (Figure 1 ) based on the ordinal optimization (OO) method [HCC99] . Our previous studies
more » ... dicate that rule selections vary with initial states, performance indices and time horizons. The "state-dependent" feature of rule selection implies that scheduling rule should be selected dynamically according to current system state and operation objective.
doi:10.1109/66.311341 fatcat:o32fmjvhzvbm3nze2rcvpqh4hu