Abstract. Programming paradigms for networks of symmetric multiprocessor (SMP) workstation (2 nd generation of clusters) are discussed and a new paradigm is introduced. The SMP cluster environments are explored in regard to their advantages and drawbacks with a special focus on memory architectures and communication. The new programming paradigm provides a solution to write efficient parallel applications for the 2 nd generation of clusters. The paradigm aims at improving the overlap of computation and communication and the locality of communication operations. The preliminary results with large message sizes indicate improvements in excess of 30% over traditional MPI implementations.
In this paper a new approach to the modelling of a supply chain is presented. The chain is modelled with dynamic elements representing the different parts of the chain. Matlab based simulation tools are used to find different stock and transportation management principles. A link to the economical evaluation of such schemes is presented. A scheme is derived for the management of the whole supply chain from forests to users of sawn timber products is to facilitate the long term development of the supply chain management and the necessary information and communication management tools.
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