Abstract: This application provides a data processing method and apparatus, and relates to the computer field. The method includes: determining a first result O? of performing calculation on a first matrix, a first submatrix K?, and a second submatrix V? based on a self-attention mechanism, where the first matrix is a query matrix Q or a submatrix of the matrix Q, the first submatrix K? is a submatrix of a key matrix K, and the second submatrix V? is a submatrix of a value matrix V The computing core determines a second result O? of performing calculation on the first matrix, a third submatrix K?, and a fourth submatrix V? based on the self-attention mechanism.