Can't switch the gpumode with one of M60 core

hi guys,
I tried to switch the GPU mode of the M60 card. I found one of the cores was not in graphics.
After I use the lspci -n | grep 10de.
86:00.0 0300: 10de:13f2 (rev a1)
87:00.0 0302: 10de:13f2 (rev a1)
Then I use the nvidia-gpu.
±----------------------------------------------------------------------------+
| NVIDIA-SMI 367.106 Driver Version: 367.106 |
|-------------------------------±---------------------±---------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
|===============================+======================+======================|
| 0 Tesla M60 Off | 0000:86:00.0 Off | Off |
| N/A 45C P0 46W / 150W | 14MiB / 8191MiB | 0% Default |
±------------------------------±---------------------±---------------------+
| 1 Tesla M60 Off | 0000:87:00.0 Off | N/A |
| N/A 33C P0 46W / 150W | 14MiB / 7679MiB | 86% Default |
±------------------------------±---------------------±---------------------+

±----------------------------------------------------------------------------+
| Processes: GPU Memory |
| GPU PID Type Process name Usage |
|=============================================================================|
| No running processes found |
±----------------------------------------------------------------------------+
and I use gpumodeswitch --listgpumodes.
NVIDIA GPU Mode Switch Utility Version 1.23.0
Copyright © 2015, NVIDIA Corporation. All Rights Reserved.

NOTE: Unconfigured display adapter found, device not accessible:
PLX (8747h) (10B5,8747,10B5,8747) H:–:NRM S:00,B:84,PCI,D:00,F:00

Tesla M60 (10DE,13F2,10DE,113A) H:85:SP8 S:00,B:86,PCI,D:00,F:00
Adapter: Tesla M60 (10DE,13F2,10DE,113A) H:85:SP8 S:00,B:86,PCI,D:00,F:00

Identifying EEPROM…
EEPROM ID (EF,3013) : WBond W25X40A 2.7-3.6V 4096Kx1S, page
GPU Mode: Graphics

Tesla M60 (10DE,13F2,10DE,113A) H:85:SP16 S:00,B:87,PCI,D:00,F:00
Adapter: Tesla M60 (10DE,13F2,10DE,113A) H:85:SP16 S:00,B:87,PCI,D:00,F:00

Identifying EEPROM…
EEPROM ID (EF,3013) : WBond W25X40A 2.7-3.6V 4096Kx1S, page
GPU Mode: N/A

Is this normal? can you give me any advice?