176 Paralelizacija GA za rešavanje nekih NP-kompletnih problema ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ svakog procesa, a zatim elemente rezultujućeg vektora deli na delove, i šalje redom procesima od 0, 1, ... n-1. Osim osnovnih sistemskih operatora, mogu se koristiti i operatori koje je definisao korisnik. Oni se prethodno moraju kreirati naredbom MPI_Op_create(opfunc, commute, pop), gde je opfunc definicija date korisničke funkcije, a pop je pokazivač na kreirani operator. Ukoliko nam neki od korisnički definisanih operatora više nije potreban, može se ukloniti naredbom MPI_Op_free(pop).
LITERATURA [Abr95] [Ack87] [Aik85] [Akl89] [Aln95] [AlS96] [Alv92] [Ant89] [Aqe90] [Ard95] [Ard96a] [Ard96b] Abramson D., De Silva A., "A Parallel Interior Point Algorithm and its Application to Facility Location Problems", Research Report CIT:95-12, School of Computing and Information Technology, Griffith University, Nathan (1995). Ackley D.H., "An empirical study of bit vector function optimization", In: Genetic algorithms and Simulated Annealing, Davis L. (ed), chapter 13, pp. 170-204 (1987). Aikens C.H., "Facility location models for distribution planning", European Journal of Operational Research, Vol. 22, pp.263-279 (1985). Akl S., "Design and Analysis of Parallel Algorithms", Prentice-Hall International, Englewoods Cliffs, NJ (1989). Alander J.T., "Indexed bibliography of genetic algorithms in operations research", Report 94-1-OR, University of Vassa, Department of Information Technology and Production Economics (1995). ftp://ftp.uwasa.fi/cs/report94-1/gaORbib.ps.Z Al-Sultan K., Hussain M., Nizami J, "A genetic algorithm for the set covering problem", Journal of the Operational Research Society, Vol. 47, pp. 702-709 (1996). Alves M.L., Almeida M.T., "Simulated Annealing Algorithm for the Simple Plant Location Problem: A Computational Study", Revista Investigaçăo, Vol. 12 (1992). Antonisse J., "A new interpretation of schema that overturns the binary encoding constraint", In: Proceedings of the Third International Conference on Genetic Algorithms, Morgan Kaufmann, San Mateo, Calif., pp. 86-91 (1989). Aqeev A.A., Beresnev V.S., "Polynomially Solvable Cases of the Simple Plant Location Problem", In: Proceeding of the First Integer Programming and Combinatorial Optimization Conference, Kannan R. and Pulleyblank W.R. (eds), University of Waterloo Press, ON, Canada, pp. 1-6 (1990) Aardal K., van Hoesel S., "Polyhedral Techniques in Combinatorial Optimization II: Computations", Technical Report UU-CS-1995-42, Department of Computer Science, Utrecht University, 44 p. (1995). http://www.cs.ruu.nl/~aardal/survey1.ps Aardal K., Labbe M., Leung J., Queyranne M., "On the Two-Level Uncapacitated Facility Location Problem", Informs Journal of Computing, Vol. 8, pp. 289-301 (1996). http://smg.ulb.ac.be/Preprints/Aardal94_15.html Aardal K., van Hoesel S., "Polyhedral Techniques in Combinatorial Optimization I: Theory", Statistica Neerlandica, Vol. 50, No. 1, pp. 3-26 (1996). http://www.cs.ruu.nl/~aardal/survey2.ps