widdershins,

I was looking at the good_cards vs bad_cards...I can see linux machines with 730 on the good card list, however windows is on the bad list.

7 different hosts on linux with 61 successful results (GT 730)

33 different hosts on windows with 183 error results (GT 730)

So there is something in the drivers between windows and linux that is causing the issue in my opinion on this. Is there a way to confirm that you have the latest driver from nvidia and not through windows updates?

Also, as I think about this more, the openCL code between all 9 are exactly the same with the exception that the open cl code for windows can not be passed as a string due to limitations by visual studio. I will need to read up to see if there is something with the size of the opencl code that is passed to the graphics card being limited on windows. I'll have to explore that a bit, but I'm not sure what we will find on that.

Note that the success speed of the linux GT 730 was about 6600 seconds elapsed time, which is over 10x slower than the average elapsed time for all the workunits given.

I say this because there are only so many hours in the day that I can stay awake and work towards the full release and I may need to timebox how deep I go fixing it.

Thanks,
-Uplinger

A long standing problem with Windows 10 and OpenCL apps for Nvidia GPUs is that Windows' automatic updates often update the Nvida driver with a driver that supports only CUDA but does not include the OpenCL driver.

At another BOINC project with many GPU apps, we have both CUDA and OpenCL sub-projects, so when someone asks why their GPU isn't working, the first question we always ask them is "Are you running Windows 10?" and the second question is "Does XYZ (the CUDA app) work?". 9 times out of 10, the answers are "yes" and "yes", and the fix is "Go load the latest driver directly from Nvidia's website."

This behavior of Win 10 is the cause of much heartburn.

The problem manifests itself as "no OpenCL device found", or similar error messages.

Doing system updates makes sense, not just for enterprise users. Overriding original device drivers by the system update is silly though (never happened to me).
I'd wish i had more control over the Win10 updates but i do them nonetheless.
If something goes wrong, i have the system back running in less than 45 minutes. Daily Acronis backups help with it. I can restore the whole system to any day in the past month.

Have anything worth keeping on your system? Do Backups ;)

Good evening,

Looks like I forgot to press the right button when moving those posts out of view. I did not mean to move the legitimate posts from our members, However, they were just discussing the spam...So I apologize if moving your post out causes confusion. I am looking to see about removing them from the forums for good.

As always, I appreciate everything you, the volunteers do for World Community Grid!

Thanks,
-Uplinger

It is as nothing compared to the work you do for us.