Claymore, you could fix the issue when using NVIDIA GPUs without fans (watercooling, server-grade GPUs, etc.):
NVML: cannot get fan speed, error 3
NVML: cannot get fan speed, error 3
NVML: cannot get fan speed, error 3
NVML: cannot get fan speed, error 3
NVML: cannot get fan speed, error 3
NVML: cannot get fan speed, error 3
NVML: cannot get fan speed, error 3
NVML: cannot get fan speed, error 3
NVML: cannot get fan speed, error 3
NVML: cannot get fan speed, error 3
NVML: cannot get fan speed, error 3
NVML: cannot get fan speed, error 3
NVML: cannot get fan speed, error 3
NVML: cannot get fan speed, error 3
NVML: cannot get fan speed, error 3
NVML: cannot get fan speed, error 3
GPU0 t=48C fan=0%, GPU1 t=76C fan=0%, GPU2 t=44C fan=0%, GPU3 t=71C fan=0%, GPU4 t=63C fan=0%, GPU5 t=52C fan=0%, GPU6 t=61C fan=0%, GPU7 t=50C fan=0%
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 367.48 Driver Version: 367.48 |
|-------------------------------+----------------------+----------------------+
| 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 | 0000:05:00.0 Off | 0 |
| N/A 50C P0 111W / 150W | 1766MiB / 7613MiB | 100% Default |
+-------------------------------+----------------------+----------------------+
| 1 Tesla M60 Off | 0000:06:00.0 Off | 0 |
| N/A 81C P0 118W / 150W | 1768MiB / 7613MiB | 100% Default |
+-------------------------------+----------------------+----------------------+