Platform MPI (formerly HP-MPI)is partially integrated with LSF.
MPI_REMSH=blaunch;export MPI_REMSH
bsub -n 16 -R "span[ptile=4]" $MPI_ROOT/bin/mpirun -lsb_mcpu_hosts a.out
Using Platform MPI with Infiniband:
bsub -n 16 -R "span[ptile=4]" $MPI_ROOT/bin/mpirun -lsb_mcpu_hosts -IBV a.out