Itherative method choice!

[Milentije]

I am dealing with a problem,which can be formulated Ax=B,in the first place I wanted to solve it with conjugate gradient method.BUt A is not positive definite.Which are the other iterative options in this case?

 

[AlephZero]

See https://www.physicsforums.com/showthread.php?t=511230