Аннотация:One of the most efficient way of solving multidimensional ill-posed problems is using of parallel computing that helps us to process a huge amount of data. But the round-off errors that grow with increasing amount of computations can significantly affect the final result of calculations. Several recent results will be presented on the study of this problem. This work was supported by RFBR, project No. 14-01-31201, and by the Supercomputing Center of Lomonosov Moscow State University.