FMM is introduced to the integral operation of Jacobi Minimal Residual(JMRES) and the efficiency of JMRES+FMM, and the conjugate gradient (CG) method is compared here.!

• 在雅可比最小残差法(JMRES)的积分运算中引入FMM并与共扼梯度法(CG)的计算效率进行了比较。