I am facing problem in using two FFTW plans in two threads parallely using boost threads.If i run only one thread it works perfectly,but if i want both threads to run then i am  getting segmentation fault.I am working on it from few months,but i am not able to solve the problem.I think problem is FFTW planner is not thread safe so it may be causing the problem.It will be great help for me if you provide some solution.