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The genetic algorithm, the simulated annealing algorithm and the optimum individual protecting algorithm are based on the order of nature, and there exist some application limitations on global astringency, population precocity and convergence rapidity. An adaptive annealing genetic algorithm is proposed to deal with the job-shop planning and scheduling problem for the single-piece, small-batch, custom...
Multi-resource sharings among virtual machines (VM)are very important in data center, but also bring contentions for cache, disk and network in host server. Recent studies focus primarily on locally optimizing resource sharings in a single server, or global optimization of mitigating cache and memory contentions. But it remains an open question how to efficiently find optimal co-schedules for cache,...
Warehouse data center is very large scale and complex, which constains tens of thousands servers and accomodates various applications. What's more important, energy consumption has risen to a critical point. Scheduling needs to maintain performance and reduce energy consumption as much as possible. Previous researches have proposed RL (reinforcement learning) as a solution. These approaches have reduced...
The dynamic tugboat scheduling problem is a special kind of Job Scheduling Problem. Here we propose an improved particle swarm optimization (PSO) algorithm in which an entropy function and an elite set is used for better performance. When the entropy of the swarm keeps under some value in a certain period, some of the particles will be replaced randomly by those from the elite set. This may help the...
Data dependencies among tasks are inevitable and have an adverse effect on the parallelism of an application. Therefore, this paper addresses the problem of setting appropriate delays on each edge of a task graph representing an application to eliminate intra-iteration data dependencies so as to produce a prologue and epilogue as small as possible. Based on the principle of the retiming technique,...
Energy minimization for multi-core embedded systems is one of the most important issues, as well as performance. When the transition time of supply voltage is a constant, appropriate execution order of tasks can decrease the number of voltage transition and save the energy overhead of voltage transition. This paper proposes a scheduling algorithm for multi-core embedded systems running periodic dependent...
5000 km high-speed railway with 350 km/h speed will be constructed in China in the next five years. Traction substations convert the high voltage electricity from the public power system to 25 kV single phase electricity, which are implemented to support the high-speed locomotives through the catenary system. These substations and the catenary system form the traction power supply system (TPSS). Researches...
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