Hi, guys, long time no see.
Recently, I am busy with some numerical computation. In the work, I have to call a Fortran function from a dynamic link library in my c++ code. The Fortran dynamic link library was made with old syntax-F77, having many COMMON statements. The Fortran function is called many times in a loop for some purpose with different input parameters. To speed up, I parallel the loop like this:
#pragma omp paralle for schedule(static)
when debuging the code with Intel Parallel Debugger Extension, I found some data race. But, after fixed the bugs, the results from parallel is rather different from sequential results. In the loopall variabls are defined as local, so I doubt whether the reason is from the Fortran DLL. Is the COMMON statement in Fortran DLL causing share conflict? How to fix it?