OpenCl.dll

It seems that a lot of GPU problems revolve around specific versions of drivers. Though NVidia has their own support structure, you can often learn from information reported by others who fold.

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OpenCl.dll

Postby Playerking12 » Sun May 21, 2017 6:25 pm

I'm not sure what's happening but when I try to use my GPU to fold, it says that OpenCl.dll is not found and here is a link to the log.

Any help would be appreciated.

Apparently, I can't post a link to the log and I'm not sure how to do that without putting a link.
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Re: OpenCl.dll

Postby Joe_H » Sun May 21, 2017 6:30 pm

Welcome to the folding support forum.

Directions for how to post your log are included in the Welcome to the Forum topic - viewtopic.php?f=80&t=26036.

As for your particular problem, a missing OpenCL.dll file is usually caused by installing only the video driver portion of the package, or the drivers being updated by Windows. In the second case, the drivers supplied by MS usually do not include OpenCL support. This can be fixed by downloading the drivers from either AMD or nVidia directly and installing those.
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Re: OpenCl.dll

Postby Playerking12 » Sun May 21, 2017 6:40 pm

Okay, I've tried installing the drivers for my GPU through the Nvidia package installer and GeForce experience and both times it says the drivers fail to install and I'm not sure where to go from there.
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Re: OpenCl.dll

Postby JimboPalmer » Sun May 21, 2017 9:24 pm

Playerking12 wrote:Okay, I've tried installing the drivers for my GPU through the Nvidia package installer and GeForce experience and both times it says the drivers fail to install and I'm not sure where to go from there.


Perhaps you should do as advised.
"Directions for how to post your log are included in the Welcome to the Forum topic - viewtopic.php?f=80&t=26036"
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Re: OpenCl.dll

Postby SombraGuerrero » Mon Jun 05, 2017 1:02 am

This just happened to me right after installing the Windows 10 Creator's Update. A *clean* install using the Nvidia package appears to be necessary to resolve this. That was my first instinct of what to do and it worked immediately. Please attempt a clean install by selecting Custom and checking the "clean install" checkbox on the installer. Then report back.
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Re: OpenCl.dll

Postby bruce » Mon Jun 05, 2017 5:04 am

There are two common problems with OpenCL.dll
1) When Microsoft upgrades the vidwo drivers, it UNINSTALLS the OpenCL.dll that you downloaded from NVidia or AMD, killing FAH. This necessitates (re-)installing the drivers from NVidia or AMD.
2) There are a variety of files called OpenCL.dll, one from NVidia, one from AMD, one from Intel (etc) and as long as you run the one from the manufacturer of your GPU, you'll be fine.
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Re: OpenCl.dll

Postby toTOW » Mon Jun 05, 2017 8:49 pm

Last week, I got a forced graphics drivers upgrade from Windows Update on my Windows 10 machines ... of course, it broke OpenCL and FAH. :(

I had to install drivers again from NV package and it worked again.
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Re: OpenCl.dll

Postby foldy » Sat Nov 18, 2017 7:57 am

I got the "Windows 10 Fall Creators Update" and automatic driver update to nvidia 388.13
After that folding still working and OpenCL.dll and nvopencl.dll still there :-)
I don't know if that's because of previous nvidia driver install 378 was custom without "Geforce Experience" and "3D Vision"
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Re: OpenCl.dll

Postby SombraGuerrero » Sat Nov 18, 2017 8:02 am

I've very recently gone through a couple clean installs of both the original Creator's update and the fall Creator's update. It appears that recently, Microsoft has packaged driver builds that do include OpenCL, to my pleasant surprise.
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Re: OpenCl.dll

Postby SteveWillis » Sat Nov 18, 2017 11:18 am

Code: Select all
steve@fah02 /var/lib/fahclient $ grep -i OpenCl log.txt
2017-11-15:16:25:31:       OpenCL: Not detected: Failed to open dynamic library 'libOpenCL.so':
2017-11-15:16:25:31:               libOpenCL.so: cannot open shared object file: No such file or
2017-11-15:16:25:31:    <opencl-index v='0'/>
2017-11-15:16:25:31:    <opencl-index v='1'/>
2017-11-15:16:25:31:    <opencl-index v='2'/>
2017-11-15:16:25:31:    <opencl-index v='3'/>
2017-11-15:16:25:31:    <opencl-index v='4'/>
2017-11-15:16:25:31:WU04:FS00:Running FahCore: /usr/bin/FAHCoreWrapper /var/lib/fahclient/cores/fahwebx.stanford.edu/cores/Linux/AMD64/NVIDIA/Fermi/Core_21.fah/FahCore_21 -dir 04 -suffix 01 -version 704 -lifeline 1697 -checkpoint 15 -gpu-vendor nvidia -opencl-device 4 -cuda-device 4 -gpu 4
2017-11-15:16:25:31:WU02:FS04:Running FahCore: /usr/bin/FAHCoreWrapper /var/lib/fahclient/cores/fahwebx.stanford.edu/cores/Linux/AMD64/NVIDIA/Fermi/Core_21.fah/FahCore_21 -dir 02 -suffix 01 -version 704 -lifeline 1697 -checkpoint 15 -gpu-vendor nvidia -opencl-device 3 -cuda-device 3 -gpu 3
2017-11-15:16:25:31:WU00:FS02:Running FahCore: /usr/bin/FAHCoreWrapper /var/lib/fahclient/cores/fahwebx.stanford.edu/cores/Linux/AMD64/NVIDIA/Fermi/Core_21.fah/FahCore_21 -dir 00 -suffix 01 -version 704 -lifeline 1697 -checkpoint 15 -gpu-vendor nvidia -opencl-device 1 -cuda-device 1 -gpu 1
2017-11-15:16:25:32:WU01:FS03:Running FahCore: /usr/bin/FAHCoreWrapper /var/lib/fahclient/cores/fahwebx.stanford.edu/cores/Linux/AMD64/NVIDIA/Fermi/Core_21.fah/FahCore_21 -dir 01 -suffix 01 -version 704 -lifeline 1697 -checkpoint 15 -gpu-vendor nvidia -opencl-device 2 -cuda-device 2 -gpu 2
2017-11-15:16:25:32:WU05:FS01:Running FahCore: /usr/bin/FAHCoreWrapper /var/lib/fahclient/cores/fahwebx.stanford.edu/cores/Linux/AMD64/NVIDIA/Fermi/Core_21.fah/FahCore_21 -dir 05 -suffix 01 -version 704 -lifeline 1697 -checkpoint 15 -gpu-vendor nvidia -opencl-device 0 -cuda-device 0 -gpu 0
2017-11-15:16:28:42:WU03:FS03:Running FahCore: /usr/bin/FAHCoreWrapper /var/lib/fahclient/cores/fahwebx.stanford.edu/cores/Linux/AMD64/NVIDIA/Fermi/Core_21.fah/FahCore_21 -dir 03 -suffix 01 -version 704 -lifeline 1697 -checkpoint 15 -gpu-vendor nvidia -opencl-device 2 -cuda-device 2 -gpu 2
2017-11-15:17:08:12:WU01:FS04:Running FahCore: /usr/bin/FAHCoreWrapper /var/lib/fahclient/cores/fahwebx.stanford.edu/cores/Linux/AMD64/NVIDIA/Fermi/Core_21.fah/FahCore_21 -dir 01 -suffix 01 -version 704 -lifeline 1697 -checkpoint 15 -gpu-vendor nvidia -opencl-device 3 -cuda-device 3 -gpu 3
2017-11-15:17:15:00:WU02:FS01:Running FahCore: /usr/bin/FAHCoreWrapper /var/lib/fahclient/cores/fahwebx.stanford.edu/cores/Linux/AMD64/NVIDIA/Fermi/Core_21.fah/FahCore_21 -dir 02 -suffix 01 -version 704 -lifeline 1697 -checkpoint 15 -gpu-vendor nvidia -opencl-device 0 -cuda-device 0 -gpu 0
2017-11-15:17:32:39:WU05:FS02:Running FahCore: /usr/bin/FAHCoreWrapper /var/lib/fahclient/cores/fahwebx.stanford.edu/cores/Linux/AMD64/NVIDIA/Fermi/Core_21.fah/FahCore_21 -dir 05 -suffix 01 -version 704 -lifeline 1697 -checkpoint 15 -gpu-vendor nvidia -opencl-device 1 -cuda-device 1 -gpu 1
2017-11-15:17:37:50:WU00:FS03:Running FahCore: /usr/bin/FAHCoreWrapper /var/lib/fahclient/cores/fahwebx.stanford.edu/cores/Linux/AMD64/NVIDIA/Fermi/Core_21.fah/FahCore_21 -dir 00 -suffix 01 -version 704 -lifeline 1697 -checkpoint 15 -gpu-vendor nvidia -opencl-device 2 -cuda-device 2 -gpu 2
2017-11-15:17:54:29:WU03:FS04:Running FahCore: /usr/bin/FAHCoreWrapper /var/lib/fahclient/cores/fahwebx.stanford.edu/cores/Linux/AMD64/NVIDIA/Fermi/Core_21.fah/FahCore_21 -dir 03 -suffix 01 -version 704 -lifeline 1697 -checkpoint 15 -gpu-vendor nvidia -opencl-device 3 -cuda-device 3 -gpu 3
2017-11-15:18:20:03:WU01:FS02:Running FahCore: /usr/bin/FAHCoreWrapper /var/lib/fahclient/cores/fahwebx.stanford.edu/cores/Linux/AMD64/NVIDIA/Fermi/Core_21.fah/FahCore_21 -dir 01 -suffix 01 -version 704 -lifeline 1697 -checkpoint 15 -gpu-vendor nvidia -opencl-device 1 -cuda-device 1 -gpu 1
2017-11-15:18:40:49:WU05:FS01:Running FahCore: /usr/bin/FAHCoreWrapper /var/lib/fahclient/cores/fahwebx.stanford.edu/cores/Linux/AMD64/NVIDIA/Fermi/Core_21.fah/FahCore_21 -dir 05 -suffix 01 -version 704 -lifeline 1697 -checkpoint 15 -gpu-


I'm curious. All of my logs have OpenCL: Not detected: but I'm folding just fine. Linux PCs.
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Re: OpenCl.dll

Postby Sven » Sat Nov 25, 2017 10:54 am

I can confirm that, the automatic driver update 4 days ago to version 388.13 included the OpenCL, and also installed 3D Vision. Seems as if Microsoft now uses the full featured driver from Nvidia for the Windows Update.
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Re: OpenCl.dll

Postby bruce » Sat Nov 25, 2017 8:19 pm

Well, that's an improvement. I guess Microsoft has finally seen the light.
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Re: OpenCl.dll

Postby toTOW » Sun Nov 26, 2017 8:52 pm

It's an improvement, but you still have to remove the unwanted 3D Vision thing after the update ... :(

I hope next step is not to install this Geforce Experience shit by default ! :evil:
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Re: OpenCl.dll

Postby Joe_H » Sun Nov 26, 2017 10:31 pm

Better to add something that is not going to be used and can be easily enough removed, than take away something necessary.
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