Dear all,<div><br></div><div><br></div><div>I'm using ksp with external superlu package to solve my linear systems. The system is sparse, real and symmetric, I'm expecting unique solution with normal values. However, the KSPSolve returned with error 0, but the norm of error is "1.#QNAN", and in the solution vector some values are "-1.#IND". What does this mean ? Any help is appreciated. Thanks.</div>
<div><br></div><div><br></div><div>Cheers,</div><div><br></div><div>Longmin </div>