[sugarbeer]

Hi, I want to do profiling for solver and assembler. I found that in OpenFOAM v2212, there is a post processing command called profilingSummary. The document is attached.

I am using it like this:

(1) copy one example to my path:

cd $FOAM_RUN
cp -r $FOAM_TUTORIALS/incompressible/simpleFoam/pitzDaily .

(2) add the following key words in conreolDict:

profiling
{
active true;
cpuInfo true;
memInfo true;
sysInfo true;
}

(3) run the following command:

cd pitzDaily
blockMesh
simpleFoam
profilingSummary

The profilingSummary is supposed to generate profiling information at the time step marked with writeInterval. If it works, it should generate profiling files in postProcessing/profiling/[YourTimeStep]/profiling. But using my command above, it did not work. I am new to openFOAM, has anyone used profilingSummary before and know how to use it? By the way, where can I check which time steps are marked with writeInterval?

Furthermore, what are the common methods to do profiling in OpenFOAM? Is there any tool besides suing OpenFOAM profilingSummary?

[einstein_zee]

Hi Kate,

I haven't heard about this so I was curious to test it out. Your workflow looks okay however, in the end you are not actually running your case in parallel! and If you try to run profilingSummary it will through you an error that the processor directories don't exist. So try to run it in parallel.

1. cd pitzDaily
2. blockMesh
3. decomposePar
4. mpirun -np <no. of procs.> simpleFoam -parallel
5. profilingSummary

Note that when you do step 4 there will be a "profiling" file generated in each processor time directories (processor#/timeDirectory#/uniform/profiling). When you do step 5, there will be a directory called "profiling" inside your "postProcessing" directory with all the time directories you saved for your simulation. Then you can access them.

By the way, for testing this out there is a case already in OF tutorials of v2212. Here is the address OpenFOAM-v2212/tutorials/lagrangian/reactingParcelFoam/verticalChannelLTS. Note that this one is not designed for parallel run so you need to adapt it(copy and paste a decomposeParDict into system directory). Hope this helps...