This OpenNL, a library to easily construct and solve sparse linear systems. * OpenNL is supplied with a set of built-in iterative solvers (Conjugate gradient,BICGSTAB, GMRes) and preconditioners (Jacobi, SSOR). * OpenNL can also use other solver

RLU 使用介绍， RLU 使用介绍。-RLU use and presentation, RLU use and presentation, RLU use and presentation.