Why my program is receiving SIGABRT when I use OpenMP to make a for loop parallel?

Question

I'm writing a scientific program to solve Maxwell's equation with C++. The task in data parallel and I want to use OpenMP to make the program parallel. But when I use OpenMP to parallelise a for loop in side a function it. When I run my code the program gets SIGABRT. I couldn't find out went wrong. Please help.

The for loop is as follows:

#pragma omp parallel for

for (int i = 0; i < totalNoOfElementsInSecondMesh; i++) {

    FEMSecondMeshElement2D *secondMeshElement = (FEMSecondMeshElement2D *)mesh->secondMeshFEMElement(i);

    if (secondMeshElement->elementType == FEMDelectricElement) {

        if (solutionType == TE) 
            calculateEzFieldForDielectricElement(secondMeshElement, i, currentSecondMeshIndex, nextFirstMeshIndex);
        else
            calculateHzFieldForDielectricElement(secondMeshElement, i, currentSecondMeshIndex, nextFirstMeshIndex);

    } else if (secondMeshElement->elementType == FEMXPMLDielectricElement) {

        if (solutionType == TE) 
            calculateEzFieldForDielectricPMLElement((FEMPMLSecondMeshElement2D *)secondMeshElement, i, currentSecondMeshIndex, nextFirstMeshIndex);
        else
            calculateHzFieldForDielectricPMLElement((FEMPMLSecondMeshElement2D *)secondMeshElement, i, currentSecondMeshIndex, nextFirstMeshIndex);

    }

}

The compiler is llvm-gcc which came with Xcode 4.2 by default.

Please help.

Answer 1

It is possible you've run into a compiler problem on Lion. See this link:

https://plus.google.com/101546077160053841119/posts/9h35WKKqffL

You can download gcc 4.7 pre-compiled for Lion from a link on that page, and that seems to work fine.