CESM error about pio_support

[huihuojia@163_com]

I encoutered a problem when I run the CESM. The attached is the log file of ccsm. The error is:

Opened existing file cam_initial_0002.nc -1
Opened existing file cam_initial_0005.nc -1
Opened existing file cam_initial_0006.nc -1
Opened existing file cam_initial_0009.nc -1
Opened existing file cam_initial_0003.nc -1

abort:
abort:
abort:
pio_support::pio_die:: myrank= -1 : ERROR: nf_mod.F90: 1216 :
PNETCDF not enabled in the build

I don't know the error is about the ncdata (cam_initial_0002.nc cam_initial_0005.nc ...) or about pio library?

ps: when I build the executable, I use "./xmlchange PIO_TYPENAME=pnetcdf"

$ grep -r "PIO_TYPENAME" *.xml
env_run.xml:entry id="PIO_TYPENAME" value="pnetcdf"
env_run.xml:entry id="OCN_PIO_TYPENAME" value="nothing"
env_run.xml:entry id="LND_PIO_TYPENAME" value="nothing"
env_run.xml:entry id="ROF_PIO_TYPENAME" value="nothing"
env_run.xml:entry id="ICE_PIO_TYPENAME" value="nothing"
env_run.xml:entry id="ATM_PIO_TYPENAME" value="nothing"
env_run.xml:entry id="CPL_PIO_TYPENAME" value="nothing"
env_run.xml:entry id="GLC_PIO_TYPENAME" value="nothing"