Re: Survey about convergence of iterations Message #3 Posted by Mad Dog ebaycalcnut on 22 Mar 2009, 3:25 p.m., in response to message #1 by Namir
Actually, I concur. If you pick a reasonably small absolute value, and I do mean reasonable compared to the solution values, you should not need to mess with the headache-y percentage tolerance.
It would be interesting to try a coupled algorithm where you first try an absolute value tolerance, get a solution, then switch to a percentage tolerance using as initial values solutions from the absolute value tolerance problem. I guess this would essentially be a double convergence.
|