Forum > GPU crunching

185.85 + CUDA 2.2 = no app freezing anymore.

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chelski:
My CUDA card (9600GSO) also had a process freeze problem on both Cuda 2.0 and 2.1 with BOINC 6.6.20.  Went back to 6.6.7 with Maik's monitoring script for a while.

Going to Cuda 2.2 and the latest built V11 fixed that on the 6.6.20.  Edit:  With driver 185.85, of course

Speed up was >10%, from typical 19 mins to 16-17 mins range.

Incredibly, I can now play a game without turning off Boinc/CUDA thread (Sins of a Solar Empire) and then upon exiting the game, had the satisfaction that CUDA runs normally again (back to the 16-17 mins per WU range)

Thanks to Raistmer and everyone else who have done an incredibly wonderful job of fixing the broken nVidia release and making CUDA a tolerable experience.

FalconFly:
As usual there's little to no documentation about what files are needed where.

Am I correct that only two Files are needed from the CUDA 2.2 Package (cudart.dll and cufft.dll) ?

Is the cudart.dll supposed to be copied to both ProgramFiles/BOINC as well as BOINC/data Directories, while cufft.dll goes to BOINC/data Directory only ?

Are the .dll's sufficient or has the CUDA 2.2 Developer Package to be installed ?

Richard Haselgrove:

--- Quote from: FalconFly on 18 May 2009, 11:55:56 am ---As usual there's little to no documentation about what files are needed where.

Am I correct that only two Files are needed from the CUDA 2.2 Package (cudart.dll and cufft.dll) ?

Is the cudart.dll supposed to be copied to both ProgramFiles/BOINC as well as BOINC/data Directories, while cufft.dll goes to BOINC/data Directory only ?

Are the .dll's sufficient or has the CUDA 2.2 Developer Package to be installed ?

--- End quote ---

You need the standard 185.85 driver package, but you don't need the developer package.

Once you have the driver, the only two other files you need are the ones you have identified - cudart.dll and cufft.dll

The important place to put them is the setiathome.berkeley.edu folder, a sub-folder of 'Projects' in the BOINC Data folder. Neither of them needs to go in Program files.

FalconFly:
Alright, that sounds good.

Searching my own System running the 185.85WHQL Driver though, I did not find these .dlls on my entire System outside of the CUDA 2.2 dev package and the ones obviosuly in the respective BOINC subfolders.
I guess those were in the NVidia temp folder the Driver installation created (and which I deleted) ?

Raistmer:
@all who had app freeze before
Look for "out of memory"errors and CPU fall back instead of  app hang with 185.85 + CUDA 2.2
I had to restart my dual-GPU Win64 server 2003 host once already.
Symptoms are:

GPU memory query call returns zero both for available and total GPU memory (printed in stderr),
subsequent CUFFT plan creation call fails with out of memory error and CPU fallback occurs.
Cause GPU in question pretty slow one I found this situation much more annoying than silent GPU hang (GPU get idle anyway but CPU become busy with underoptimized CPU stock app).

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