VIP-PLANOPT is based on a proprietary hybrid heuristic-cum-analytical technique which has evolved through years of research work. It can generate high quality solutions for large scale problems with minimal computational cost. This is due to PLANOPT’s underlying search philosophy of identifying, for each block, the feasible design space with the highest probability of the optima. A pseudo- exhaustive search is then carried out for the optimum solution at each stage of a multi-stage optimization process. VIP-PLANOPT improves its optimization algorithm with double precision arithmetic which makes the software more stable and almost crash-proof .