Members 

Description 

itmSGS 

Gauss-Seidel method iterative sparse Ax=b solver. 

itmICCG 

Solve a symmetric positive definite linear system Ax=b using the incomplete Cholesky preconditioned conjugate gradient method. 

itmILUR 

Solve a general linear system Ax=b using the incomplete LU decomposition with iterative refinement. 

itmJAC 

Solve a general linear system Ax=b using Jacobi iteration. 

itmLUBC 

Solve a linear system Ax=b using the BiConjugate gradient method with incomplete LU decomposition preconditioning. 

itmSLUCN 

Solve a general linear system Ax=b using the incomplete LU decomposition with the Conjugate Gradient method applied to the normal equations, viz., AA'y=b, x=A'y. 

itmLUCS 

Solve a linear system Ax=b using the BiConjugate Gradient method with incomplete LU decomposition pre conditioning. 

itmLUGMRES 

This routine uses the generalized minimum residual (GMRES) method with pre conditioning to solve non-symmetric linear systems of the form: A*x=b. 

itmLUOM 

Solve a general linear system A*x=b using the preconditioned orthomin method.