System.DllNotFoundException - Unable to load DLL 'x64\yolo_cpp_dll_gpu.dll': The specified module could not be found.

[dttson]

Hi, i got this error when trying to test on a gpu environment. Could you help me?

[tinohager]

Exists the x64 folder on the destination?

[chesslove]

Thank for your reply, i recorded a video to show step by step. Hope it could help.
https://youtu.be/wChPfgpk-0k

[tinohager]

Dont change the existing code in the YoloWrapper.cs, copy the cudnn64_7.dll in the x64 output directory.

[chesslove]

It is working perfectly now, thank for your help!

[omarattia3143]

i get the same error in this line
case DetectionSystem.GPU:
var deviceCount = GetDeviceCount(); //this one
i am using nvidia optimus, both of my cuda and cudnn flags are true
but it's not getting my gpu name
so there error mainly inthe GetDeviceCount(); method
[DllImport(YoloLibraryGpu, EntryPoint = "get_device_count")]
internal static extern int GetDeviceCount(); //this one

haaaalp!

[tinohager]

@omarattia3143 have you some result with this tool "%PROGRAMFILES%\NVIDIA Corporation\NVSMI\nvidia-smi.exe"?

https://stackoverflow.com/questions/30693704/no-cuda-capable-device-is-detected-with-cuda-capable-gpu-installed-win7

[omarattia3143]

@tinohager thanks for the fast replay, here is the result >

+-----------------------------------------------------------------------------+
| NVIDIA-SMI 411.31 Driver Version: 411.31 |
|-------------------------------+----------------------+----------------------+
| GPU Name TCC/WDDM | Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
|===============================+======================+======================|
| 0 GeForce 920M WDDM | 00000000:08:00.0 N/A | N/A |
| N/A 44C P8 N/A / N/A | 38MiB / 2048MiB | N/A Default |
+-------------------------------+----------------------+----------------------+

+-----------------------------------------------------------------------------+
| Processes: GPU Memory |
| GPU PID Type Process name Usage |
|=============================================================================|
| 0 Not Supported |
+-----------------------------------------------------------------------------+

[tinohager]

Do you have experience with c++? I call this method in background cudaGetDeviceCount.

https://github.com/AlexeyAB/darknet/blob/master/src/yolo_v2_class.cpp -> int get_device_count() {

[omarattia3143]

i understand the code ... but i can't figure out the problem with gpu though everything works great with cpu. as soon as i put cudnn64_7.dll i get this exact error building for x64:
System.DllNotFoundException: 'Unable to load DLL 'x64\yolo_cpp_dll_gpu.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)'

i think i have to try it on a different machine.

[tinohager]

Check you have missing dependency and send a screenshot please
http://www.dependencywalker.com/

[tinohager]

Have you copy the cudnn64_7.dll in the x64 directory.?

[omarattia3143]

Have you copy the cudnn64_7.dll in the x64 directory.?

yes i did
also here is dependency walker

---

i am using VS2017

[tinohager]

Your system miss the msvcr100.dll

[tinohager]

Try this dll please msvcr100.zip

[omarattia3143]

excuse my limited knowledge, my msvcr100 files are OK tried different version and tried yours and even Microsoft Visual C++ Redistributable for Visual Studio 2017 ... is there problem with my kernel32.dll too?
thank you for helping me i will take it from here and try to fix it.

[omarattia3143]

finally the detection has been using gpu with these configurations:
Nvidia Driver 416.34
CUDA 9.2.148
cuNdd 7.1.4
and fixing all the missing dependencies using dependency walker
thanks @tinohager

[tinohager]

perfect 👍