controlling MPI-3 shared memory allocation target

Hi,

I'd like to request a feature for using Intel MPI on KNL.

MPI-3 allows to allocate memories shared among the MPI tasks on the same node through MPI_Win_allocate_shared. I'd like to have the control of where this chunk of memory is seated, either on MCDRAM or DDR when I use the flat mode of MCDRAM. I need something similiar to hbwmalloc which complements malloc for targeting MCDRAM or at least a way to control the target.

Thanks. Ye