Why do residuals increase
 

For most problems, whenever the solver settings are changed, the residuals would shoot up but rapidly decrease before stabilizing at convergence. What does it mean if the rapid decrease is followed by a very very slow increase with respect to the number of iterations?

Re: Why do residuals increase
 

divergence

Re: Why do residuals increase
 

shouldn't divergence be rapid wrt iterations?

Re: Why do residuals increase
 

no can be gradual esp if low urf's