In this paper, we present a deterministic permutation flowshop scheduling problem with new objective function, the total core idle time. The interest of is related to reduce energy consumption system, taking into account that needed during processing times constant, and machines are switched off front back times. Therefore, dependent on time where in stand-by mode, i.e between jobs, named as Co...

In this paper, the landscape for the permutation flowshop scheduling problem (PFSP) with stochastic local search and a critical block-based neighbourhood structure has been investigated. Numerical experiments using small benchmark problems show that there are good correlations between the makespans of local optima, the average distances to other local optima and the distances to the known globa...