Patent Document ID: 20150293883
Application ID: 14748420
Patent Flag: 0

Claim One:
1. A calculation device for deriving solutions of a system of linear equations, which realizes a solution of the system of linear equations using an iterative method belonging to a Krylov subspace method, the device comprising: a plurality of arithmetic units, wherein a vector sequence x k , where k is a natural number containing 0, approximating to the solution of the system of linear equations comprises a plurality of components in accordance with an order of the vector sequence x k , and when the vector sequence x k is divided into a plurality of different regions corresponding to the plurality of components and each of the plurality of arithmetic units are caused to execute arithmetic processings corresponding to the plurality of different regions in parallel in iterative computation of causing the vector sequence x k to approximate to the solutions, a preconditioned matrix that is used in the iterative computation is a diagonal matrix.