Pre-conditioning conjugate gradient method. -- CFD Online Discussion Forums

October 17, 2007, 14:52	Pre-conditioning conjugate gradient method.	#1
Prashanth Guest Posts: n/a	I had a question on pre-CGM,pls help with the soln. question: A student claims that he is getting a numerical soln which matches the exact soln upto 1/16 th decimal place and no. of iterations the preconditioning solver is taking to reach convergence of order 1e-8 is equal to the no. of discretized equations which he is solving.Is the claim true? explain?

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