The parallel algorithms used in the RADUGA code to solve the transport equation for neutral particles in 1D-, 2D-, and 3D-regions by the discrete ordinates method on multiprocessor systems with shared memory is considered. Some test results are discussed to illustrate the efficiency of the parallel algorithms in time and memory by the example of the radiation shielding problem. The paper was prepared on the basis of the authors' report at the International Conference on Parallel Computing Technologies (PaVT-2009; http://agora.guru.ru/pavt).

Keywords: transport equation, spatial decomposition method, parallelization, parallel algorithms

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