Dear folks,<div> I hope you guys are having a nice day. </div><div> I'm reading the /src/ksp/ksp/examples/tutorials/ex29.c.html and wonder how to set up the convergence criteria? Currently I use it as a poisson solver to solve a Poisson Equation with three direction Neumann BC's and one direction Diriechlet BC's. It seems very bad on it.</div>
<div><br></div><div>thanks in advance, </div><div>Alan</div>