In this software package,multilevel multipole method is used to compute the matrix-vector product quickly,and ILUT preprocessing is used to improve the convergence speed of iterative method.

• 在软件包中,多层快速多极算法被用以加速矩阵向量乘积的运算,ILUT预处理算法被用以加快迭代算法的收敛速度。