KSPMonitorTrueResidualNorm and SNES

[Lukasz Kaczmarczyk]

Hi Barry

I am using petsc-3.0.0-p7.

Regards,
Lukasz

On 28 Oct 2009, at 01:30, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
>  What prehistoric version of PETSc are you using?
>
>
>  Barry
> On Oct 27, 2009, at 6:19 PM, Lukasz Kaczmarczyk wrote:
>
>> Hello,
>>
>> I have noticed minor problem, potentially bug. For nonlinear  
>> analysis with SNES and option -ksp_monitor_true_residual I get
>> 0 Norm Res_strain 9.36e-12 Norm Res_stress 1.43e-05 Internal its   1
>> 0 SNES Function norm 1.428489691212e-05
>>   0 KSP preconditioned resid norm 7.213823259362e-04 true resid  
>> norm 1.428489691212e-05 ||Ae||/||Ax|| 1.000000000000e+00
>>   0 KSP preconditioned resid norm 7.213823259362e-04 true resid  
>> norm 1.428489691212e-05 ||Ae||/||Ax|| 1.000000000000e+00
>>   1 KSP preconditioned resid norm 4.903423697449e-04 true resid  
>> norm 9.339595309685e-06 ||Ae||/||Ax|| 6.538090801174e-01
>>   1 KSP preconditioned resid norm 4.903423697449e-04 true resid  
>> norm 9.339595309685e-06 ||Ae||/||Ax|| 6.538090801174e-01
>>
>> It look that function KSPMonitorTrueResidualNorm is evaluated  
>> twice, whereas for default KSP monitor only once. I use petsc-3.0.0- 
>> p7.
>>
>> Kind regards,
>> Lukasz
>
>
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