Wednesday, November 14, 2007
Section 5.5
When calculating the maximum number of iterations that we want to compute for GMRES why is 10 an option. Why is 10 such a good number for iterations in comparison to 15 or 20? I can see that restart GMRES and MINRES are good methods for saving time. I'm not exactly sure if I completely understand the real-valued function (5.18). I don't know where the terms come from. In example 5.16, I don't exactly know what the graphs are suppose to be telling me. What I'm confused about for preconditioning though is how we would be able to get a matrix in the form of M^-1*A for better conditioning but not compute what M^-1 is.
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