Can have an upper and lower threshold. Each node tries to keep its load within an acceptable range. Does adjust its threshold. Keep track of responses from the probes so a cache of receivers, senders, and oks are kept at each node. It is adaptive in that policies react to system state.
Basic idea is to understand how relatively simple load sharing policies work.
Assume a system model of 20 homogeneous node with some processor cost assigned to a task transfer. Exponentially distributed arrival rates and service times. Used an analytically study backed up by a simulation. Have a transfer limit L t . Look at primary results.