Distributed computing system and method and storage medium

The invention discloses a distributed computing system and method and a storage medium. The distributed computing system includes at least two computing nodes and at least two parameter service nodes.A computing node initializes vectors of corresponding users in a user matrix according to the users, which are included by a subset of training data, to obtain a user sub-matrix composed of the initialized vectors; the computing node carries out iterative computing on the user sub-matrix and an item sub-matrix according to the subset of the training data and the item sub-matrix obtained from a parameter service node, and transmits an item sub-matrix, which is obtained after each time of iterative computing, to the corresponding parameter service node; the parameter service node initializes vectors, which correspond to partial items, to obtain the item sub-matrix composed of the initialized vectors; and the parameter service node updates an item sub-matrix, which is stored by the parameterservice node, according t