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Travelling Salesperson Problem A Java mpj-express approach

Travelling Salesperson Problem A Java mpj-express approach. By Jakob Haug Oftebro, Ulrik Sagen and Eirik Aasved Holst. The problem. What is the shortest closed circuit that visits all locations ? O(n!) NP-Hard. Genetic algorithm. PSEUDOCODE FOR SEQUENTIAL GA:

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Travelling Salesperson Problem A Java mpj-express approach

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  1. Travelling Salesperson ProblemA Java mpj-expressapproach By Jakob Haug Oftebro, Ulrik Sagen and Eirik Aasved Holst

  2. The problem • What is theshortestclosedcircuitthatvisits all locations? • O(n!) • NP-Hard

  3. Genetic algorithm PSEUDOCODE FOR SEQUENTIAL GA: Generate initial population while(not finished){ evaluatefitness evolvepopulation }

  4. IN PARALLEL PSEUDOCODE FOR PARALLEL GA: while(outerloop){ //onrootprocessor mixPopulation() for(innerloop){ //oneachprocessor evaluatefitness evolvesubPopulation } }

  5. PARALLELISM • Population = n • subPopulation = n/#processors

  6. Graphicalevolutionrepresentation

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