F@H problem after swapping ATi to nvidia

TomO · 9 Mar 2009 at 16:28

swapped out an ATi card for nvidia card in one of my rigs, unistalled ATi drivers, took out card, fitted new card, installed nvidia drivers, so far so good...

have unistalled and reinstalled F@H and get the following error in the log

[14:47:26] Entering M.D.
[14:47:34] CoreStatus = FFFFFFF6 (-10)
[14:47:34] Client-core communications error: ERROR 0xfffffff6
[14:47:34] This is a sign of more serious problems, shutting down.

and the following on screen pop up.

"Folding at home has run into a serious error running the core and will shutdown"

any ideas?

Berserker · 9 Mar 2009 at 16:36

Swapping sides is often a little problematic. Did you run driver cleaner or whatever the current tool of choice is to completely get rid of anything ATI?

As for the nVidia drivers, did you use the right ones? Some versions work, many don't.

TomO · 9 Mar 2009 at 17:22

latest nvidia drivers off their website. didnt run driver cleaner. can i run that after the event now?

Berserker · 9 Mar 2009 at 17:23

Yup - uninstall the nVidia drivers, clean, reinstall (but make sure you install a compatible set - which may not be the latest). I don't do GPU folding so can't direct you to a specific driver version.

ChrissyT88 · 9 Mar 2009 at 17:27

Most nvidia drivers support F@H now i think, but maybe get the newest drivers from the CUDA section of the site:

http://www.nvidia.co.uk/object/cuda_get_uk.html

Im not too sure if they are different to the regular drivers, but they are official CUDA optimised drivers, so will be 100% compatible with F@H.

Mattus · 9 Mar 2009 at 17:45

You're not trying to fold an ATi WU, are you? Reinstalling the client might not have been enough to delete the data files.

Berserker · 9 Mar 2009 at 18:10

That's true enough. You should delete everything from the old client and start again.

TomO · 9 Mar 2009 at 18:27

where are these files then? surely they would clear these out on an uninstall?!?

Berserker · 9 Mar 2009 at 18:29

Nope - uninstalling the folding@home client doesn't delete work files. You'll have to remove them yourself (removing the work subdirectory, queue.dat, and all the FahCore binaries should do it, but if in doubt uninstall and nuke everything).

Biffa · 9 Mar 2009 at 19:44

check the log it tells you if it detects ATi or Nvidia and uses the relevant client.

TomO · 9 Mar 2009 at 19:53

cool, thanks guys. will have to check it out tomorrow as this is my work PC in the office.