[mkiewat]

Hi all,

I modified a function object to send volume field data to an external C function. I'm basically copying a field vector component to a scalarField variable, then I send a pointer, pointing to the C-data, to an external C++ function "CallScript".

const scalarField fCellValues = values.component(vector::X);
const double * const fieldVectorPtr = fCellValues.cdata();
const double response= mlObj.CallScript(mScriptFilename,nCellsPtr,fieldVectorPtr);

After a few time steps I'm experiencing a steady increase (each timestep) in memory on the master process until it runs out of memory and the simulation crashes. In the function object .C file, do I need to manually destroy the fCellValues, fieldVectorPtr and response variables after usage and how should I do that? Is there a better way than copying the data? I tried to just pass a pointer to values.component(vector::X), but after a short time, the data that the pointer points to is destroyed automatically and it can't be accessed within the external function anymore (the pointer version works for very small cases with a few cells only). Has anyone experienced the same type of trouble?