Hi! I'm recently trying out the example code provided with the KSP solver (ex12.c). I noticed that the mean norm of the grid increases as I use finer meshes. For example, the mean norm is 5.72e-8 at m=10 n=10. However at m=100, n=100, mean norm increases to 9.55e-6. This seems counter intuitive, since most of the time error should decreases when using finer grid. Am I doing this wrong?
Thanks! -- Wang Weizhuo
