Latest drivers (NVidia and ATI)

[Ghost0210]

285.27 has been released in beta
http://www.nvidia.com/object/win7-winvista-64bit-285.27-beta-driver.html

Anyone know if CPU usage has been reduced on OpenCL apps with this driver?

Claggy

They haven't, I'm still getting full CPU core usage running nv AP r521 tasks with them

[Raistmer]

Looks like AMD ahead then

[Ghost0210]

Looks like AMD ahead then

or not as far back 

[arkayn]

I am getting errors on Collatz using this driver though. It is crashing right at the end of computing the work unit with "Unhandled Exception Detected...

- Unhandled Exception Record -
Reason: Access Violation (0xc0000005) at address 0x00754F4E read attempt to address 0x040F2C58"

The address is different every time, of course some work has run just fine as well.

[Jason G]

Right at the end of a task ?  Fancy that! LoL. 

[Mike]

Looks like AMD ahead then

or not as far back 

Dont think so. 

[arkayn]

Right at the end of a task ?  Fancy that! LoL. 

I think part of the problem is he is running CUDA 3.1 and 285.xx is CUDA 4.1.

[Jason G]

I think part of the problem is he is running CUDA 3.1 and 285.xx is CUDA 4.1.

Only bug I ever managed to find in Cuda 3.1 is mixing Fermi & Pre-Fermi generation cards running CuFFT in the same host.  Other than that, shouldn't be an issue (except for the non-threadsafe app thing that is ).  [Edit:] Note carefully the ongoing pattern of pointing blame at drivers automatically, when in fact the majority of identified flaws (so far) end up being latent application code flaws (and some bugs too).

[Geek@Play]

I don't know if I am posting in the correct thread but I will take a chance.

Referencing the problem of having excessively high cpu run time on the OpenCL science apps when using the newer video drivers (Version 270+).  Is this a video driver fault or an Opencl app fault?  I am using NVIDIA so specially interested in this fault on this product.

Thanks.

[Raistmer]

I don't know if I am posting in the correct thread but I will take a chance.

Referencing the problem of having excessively high cpu run time on the OpenCL science apps when using the newer video drivers (Version 270+).  Is this a video driver fault or an Opencl app fault?  I am using NVIDIA so specially interested in this fault on this product.

Thanks.

1) Older drivers show low CPU consumption.
2) I'm not aware how I can circumvent this issue from app side with new drivers.
3) Same problem on ATI (high CPU usage) confirmed as driver bug and should be fixed in new Catalyst version

So? ...

[arkayn]

I just put Collatz on NNT for the time being, I have been lucky and gotten some Einstein GPU work at least. The other possibility is to add the CUDA app for Milkyway into my app_info and crunch it on both cards for a little while.

[Geek@Play]

Thanks Raistmer............

Guess we will wait until NVIDIA get's it worked out then.

Been running your AP OpenCL app for some time using driver 267.31 with no problems on my GTX 580.

[Ghost0210]

The official Cat11.9 has just been released

[Mike]

Cat 11.10 preview released.

http://support.amd.com/us/Pages/AMDCatalyst1110Previewdriver.aspx

[Raistmer]

Cat 11.10 preview released.

http://support.amd.com/us/Pages/AMDCatalyst1110Previewdriver.aspx

O, no... benchmarking again...