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The paper considers a simulation algorithm for dendritic crystallogram images and offers its parallel implementation using MPI technology. As a basis we took an algorithm using an impurity-and-materialsubstance diffusion equation. The algorithm used as a guide was upgraded. An impurity redistribution method was changed, and the order of crystallization was updated that allowed to maintain the impurity volume during the crystal growth. A separation technique for algorithm stages was proposed on compute cores. An acceleration value of the proposed MPI-implementation has proven to be 20% more than the OpenMP analogue. The resulting implementation may be used to simulate large crystallograms in shared-memory systems.

Development of parallel implementation for the dendritic crystallograms modeling algorithm