ERR: corrupt dat.conf entry field

We recently installed a cluster using Rocks 6.2, OFED-3.18-3, and Intel Parallel Studio XE Cluster Edition 2016.4.258.

My parallel code can run and the performance is good, but the code output says

 ERR: corrupt dat.conf entry field: EOR, EOF, file offset=5885
 ERR: corrupt dat.conf entry field: EOR, EOF, file offset=5885
 ERR: corrupt dat.conf entry field: api_ver, file offset=5974
 ERR: corrupt dat.conf entry field: api_ver, file offset=6061
 ERR: corrupt dat.conf entry field: api_ver, file offset=6148
 ERR: corrupt dat.conf entry field: api_ver, file offset=5974
 ERR: corrupt dat.conf entry field: api_ver, file offset=6061
 ERR: corrupt dat.conf entry field: api_ver, file offset=6148
 ERR: corrupt dat.conf entry field: EOR, EOF, file offset=5885

...

I tried to google it, but can not find useful information. Thanks in advance for any help.

Best wishes,
Ding