GPU problems with NVIDIA GTX 660

From the sticky thread NVidia driver problems which cause computation errors:

2) Kepler cards unsupported

Drivers affected: All drivers from 304.48 (BETA) onwards.
Hardware affected: nVidia 'Kepler' - GT 6xx and GTX 6xx cards.

Symptom: All tasks end in errors when using the stock v6.10 'cuda_fermi' application.

Solution/workround:
a) Use an optimised Cuda application, where available.
b) Downgrade to the 301.42 driver - only possible on GTX 670/680/690 cards, not on newer releases like the 650/660 or their Ti variants.
c) Set an environment variable, as shown below.

The environment variable to use is

CUDA_GRID_SIZE_COMPAT

and it needs to have the value 1 (one)

You need to be running in Administrator mode, and you need to be running at least driver 306.02 (BETA) or 306.23 (WHQL)

Here's how to reach the setting screen:

Windows 7/Vista:



Windows XP:

I should have added that the OS is Windows 8 on an HP Desktop.
The Display Adaptor Driver version is 9.18.13.529. I was unable to find the Environment Variable. Tried searching Control Panel, No match found.

http://www.technoon.com/how-to-add-environment-variables-in-windows-8.html
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Jord

- BOINC FAQ Service
- BOINC User Wiki

Real is just a matter of perception.

I have a 660 Ti. So downgrading is not an option.

Hope this problem will get fixed in the future.

Read!: "The options given are Either, or, or. In other words, choose one and try it, there's no need to use all three."

You need only:
CUDA_GRID_SIZE_COMPAT


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- ALF - "Find out what you don't do well ..... then don't do it!" :)