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The problem occurs when I remove the NPAR tag or set NPAR = 16 (my total cores on 1 node) for calculation with a hcp structure. There is no problem when I do the same thing with a bcc structure calculation. The version of vasp is 5.3.2 compiled by intel Fortran MKL and openMPI.
Here is the problem example:

INCAR:
#NPAR = 4
START = 0 ; ICHARG=2
ISMEAR = 1 ; SIGMA = 0.1
ENCUT = 540

KPOINTS:
kpoints
0
G
17 17 9
0 0 0

POSCAR:
Ti
0.995299445925415
2.9505999088000001 0.0000000000000000 0.0000000000000000
-1.4752999544000001 2.5552944773999999 0.0000000000000000
0.0000000000000000 0.0000000000000000 4.6788001059999997
Ti
2
Direct
0.3333333429999996 0.6666666870000029 0.2500000000000000
0.6666666269999979 0.3333333129999971 0.7500000000000000

POTCAR: paw_pbe Ti_sv

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