intercepting residues as array

Barry Smith bsmith at
Fri Dec 11 13:38:49 CST 2009

   See the manual page for KSPSetResidualHistory()

    Let us know if it does not provide the functionality you need.


On Dec 11, 2009, at 1:36 PM, Dominik Szczerba wrote:

> Would it be easy to intercept the rnorms as computed in e.g. fgmres  
> into an array? E.g. have
>  0 KSP Residual norm 5.955965225039e-04
>  1 KSP Residual norm 8.064336982160e-05
>  2 KSP Residual norm 2.550695121313e-05
>  3 KSP Residual norm 7.872959324551e-06
>  4 KSP Residual norm 2.084257872716e-06
> as {5.955965225039e-04, 8.064336982160e-05, ...} for independent  
> logging etc.
> I know how I can do it the long way (e.g. writing my own convergence  
> test where I have an access to rnorm), but I was wondering if there  
> was a short way.
> with regards,
> Dominik

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