artykuł: Implementacja algorytmu efektywnego rozgłoszenia i redukcji wiadomości w klastrze (Pokuta W.), s. 127--138The article describes an algorithm of efficient message reduction and broadcast in a computer cluster. In order to achieve high efficiency processes are placed in the structure of the hypercube through their appropriate numbering. The algorithm does not require knowledge of the physical structure of the cluster, it is universal for certain standards, for example MPI. The present algorithm has weaknesses that have been described in the article. It has been derived complexity of optimistic and pessimistic broadcast for a certain class of clusters.