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Setting SolverPerformance in controlDict

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Old   March 16, 2014, 16:51
Default Setting SolverPerformance in controlDict
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Hi everybody,

I've just started learning OpenFoam, and ran into a problem setting SolverPerformance in controlDict. From what I understand, settings in a case's controlDict is supposed to override settings in $WM_PROJECT_DIR/etc/controlDict, but this doesn't seem to happen when I try it.

What I do is:

run
cp -r $WM_PROJECT_DIR/tutorials/incompressible/icoFoam/cavity .
cd cavity/

I add the line:
SolverPerformance 2;
to the end of cavity/system/controlDict

and then:

blockMesh
icoFoam

The output I get is:

Time = 0.005

Courant Number mean: 0 max: 0
DILUPBiCG: Solving for Ux, Initial residual = 1, Final residual = 2.96338e-06, No Iterations 8
DILUPBiCG: Solving for Uy, Initial residual = 0, Final residual = 0, No Iterations 0
DICPCG: Solving for p, Initial residual = 1, Final residual = 7.55402e-07, No Iterations 35
time step continuity errors : sum local = 5.03809e-09, global = 4.40722e-19, cumulative = 4.40722e-19
DICPCG: Solving for p, Initial residual = 0.523591, Final residual = 9.72352e-07, No Iterations 34
time step continuity errors : sum local = 1.07766e-08, global = 2.93897e-19, cumulative = 7.34619e-19
ExecutionTime = 0.02 s ClockTime = 0 s


However, if I open $WM_PROJECT_DIR/etc/controlDict, and set:
SolverPerformance 2;

The output I get is something like:

Time = 0.005

Courant Number mean: 0 max: 0
DILUPBiCG: Iteration 0 residual = 1
DILUPBiCG: Iteration 1 residual = 0.153298
DILUPBiCG: Iteration 2 residual = 0.0375508
DILUPBiCG: Iteration 3 residual = 0.00820823
DILUPBiCG: Iteration 4 residual = 0.00174405
DILUPBiCG: Iteration 5 residual = 0.000357418
DILUPBiCG: Iteration 6 residual = 7.4212e-05
DILUPBiCG: Iteration 7 residual = 1.51806e-05
DILUPBiCG: Iteration 8 residual = 2.96338e-06
DILUPBiCG: Solving for Ux, Initial residual = 1, Final residual = 2.96338e-06, No Iterations 8

etc



Does anyone know why it didn't work setting the SolverPerformance in the local controlDict for the case?


Cheers,
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Old   March 17, 2014, 14:46
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Tom Fahner
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Hi,

I think you need to use a sub dictionary like the example below taken from the 2.2 release notes.

Code:
DebugSwitches 
{ 
    SolverPerformance 2; 
}
Regards,
Tom
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Old   March 17, 2014, 18:58
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Hi Tom,

Thanks for the suggestion. However, when I tried it, I now get an output saying:


...
Create time

Overriding DebugSwitches according to controlDict
Create mesh for time = 0

Reading transportProperties

etc


I didn't get the "Overriding DebugSwitches according to controlDict" previously, so at least it reads the DebugSwitches. Unfortunately, I don't get any extra output information, so something is still missing.
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Old   March 18, 2014, 10:51
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Tom Fahner
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Hmm just did a test and I can report the same issue with the unBoundedGauss warning in version 2.2, meaning I get the

"Overriding DebugSwitches according to controlDict"

in the log, but still get the warning. Maybe there is some bug or additional setting I am not aware of.
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Old   March 18, 2014, 11:30
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Alexey Matveichev
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Hi,

this message is produced by TimeIO.C and it seems do read the settings:

Code:
    if (controlDict_.found("DebugSwitches"))
    {
        Info<< "Overriding DebugSwitches according to " << controlDict_.name()
            << endl;
    
        simpleObjectRegistry& objects = debug::debugObjects();
        const dictionary& localSettings = controlDict_.subDict("DebugSwitches");
        forAllConstIter(dictionary, localSettings, iter)
        {
            const word& name = iter().keyword();
    
            simpleObjectRegistryEntry* objPtr = objects.lookupPtr(name);
    ...
Maybe it then forgets about them

But OpenFOAM quite happily reads debug switches from ~/.OpenFOAM/<VERSION>/controlDict. Though it is site-wide settings.
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Old   March 18, 2014, 17:11
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It seems this has already been reported as a bug:
http://www.openfoam.org/mantisbt/view.php?id=1020
(should have checked this before opening a thread, sorry)

The answer is: "The debug symbols are currently only stored for non-templated classes."

When checking SolverPerformance.C, it indeed is a template class, so I guess that explains it.
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