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Boundary condition with mpirun

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Old   August 8, 2013, 22:47
Default Boundary condition with mpirun
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Hello everyone!

I just implemented Lund's recycled boundary condition (thank you Perry Johnson ) in OpenFOAM, and it seems to work just fine on a single processor.

However, when I run the simulation on several processors, I get a pretty uggly error (sigSegv, sigFpe, etc...). Is there anything I should be doing to parallelize my code?

Basically, the algorithms starts with

void Foam::scaledMappedVelocityFixedValueFvPatchField:: updateCoeffs()
if (updated())

// Since we're inside initEvaluate/evaluate there might be processor
// comms underway. Change the tag we use.
int oldTag = UPstream::msgType();
UPstream::msgType() = oldTag+1;

// Get the mappedPatchBase
const mappedPatchBase& mpp = refCast<const mappedPatchBase>
scaledMappedVelocityFixedValueFvPatchField:atch( ).patch()

const fvMesh& nbrMesh = refCast<const fvMesh>(mpp.sampleMesh());
const word& fieldName = dimensionedInternalField().name();
const volVectorField& nbrField =

after that, I extract a plane from the domain, scale it, and eventually return the inlet as follows:

// return the velocity values to inlet condition

// Restore tag
UPstream::msgType() = oldTag;


If someone had an idea, it would be really great! I don't really feel like running my LES on a single processor.


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