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conjugate gradient method for linear equations

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Old   February 27, 2007, 11:31
Default conjugate gradient method for linear equations
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Does any one know the ratio in conjugate gradient method for linear equations system? My error is the ratio is either NAN or too low (e-15). Then how do I adjust the syetem of eqations to get correct solution?
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Old   March 5, 2007, 09:27
Default Re: conjugate gradient method for linear equations
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I reccomend you to use Saad's package SPARSKIT

I use conjugate gradient solver from it and it works well. Look. I think it will help you.

I wish good luck.
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