I am numerically solving Poisson equation using Poisson Solver Routines https://software.intel.com/en-us/node/471042 . The equation has both Neumann and periodic boundary conditions. These boundary condition will go into the parameter 'BCtype.' In my code, the library seems to not allow me to solve Poisson equation with periodic boundary condition. After I run my code, I received this error message:
"MKL POISSON LIBRARY ERROR:
Parameter ipar[3]=-197 is out of admissible range {0,...,15} Probably, it was altered by mistake outside of the routine, or some characters in the parameter 'BCtype' were out of admissible range {D,N} during initialization stage. Computations has been stopped The result may be wrong. "
Is it possible to solve Poisson equation with the periodic boundary condition? According to the above webpage, it is legitimate. But it fails in practice.