OpenCL works on Nvidia cards after all? back

(L) [2013/07/06] [dbz] [OpenCL works on Nvidia cards after all?] Wayback!

I noticed in the [LINK http://www.luxrender.net/luxmark/top/top20/Room/GPU Luxmark results] that Titan is able to run Luxmark. Can anybody confirm Nvidia officially supports OpenCL 1.1 after all on newer cards? (Not that someone just hacked the driver or something to get OpenCL to run).
A single GTX 680([LINK http://www.luxrender.net/luxmark/detail/result/2066 score 4241]) is faster on Luxmark than 5x GTX Titan ([LINK http://www.luxrender.net/luxmark/detail/result/3070 score 3649]). Very strange ...

(L) [2013/07/06] [McAce] [OpenCL works on Nvidia cards after all?] Wayback!

Yes, OpenCL 1.1 has been supported for a while, but the performance is usually not up to par.

(L) [2013/07/07] [Dade] [OpenCL works on Nvidia cards after all?] Wayback!

NVIDIA has fixed OpenCL Titan drivers few weeks after the release. There was some known problem with multiple OpenCL applications (not only LuxMark) at the time of the release.
I assume they are now on par with all other NVIDIA OpenCL drivers (i.e. work well but they are slow).
 >> dbz wrote:A single GTX 680([LINK http://www.luxrender.net/luxmark/detail/result/2066 score 4241]) is faster on Luxmark than 5x GTX Titan ([LINK http://www.luxrender.net/luxmark/detail/result/3070 score 3649]). Very strange ...
LuxMark database accepts any result and it is quite easy to cheat. You have to be a bit careful while reading the results. First of all, try to use the average of all submitted results for each OpenCL device: [LINK http://www.luxrender.net/luxmark/search/avg/Sala] (1418 for the 680GTX with Apple driver)
If the number of submitted result is small, even the average may be misleading so try to check all submitted results: [LINK http://www.luxrender.net/luxmark/search/search?page=1&benchmark_type=Sala&benchmark_mode=ANY&os_type=ANY&dev_count=1&device_unique_name=NVIDIA%20Corporation_SEPARETOR_GeForce%20GTX%20TITAN_SEPARETOR_14]
Unfortunately the number of Titan results is small so it is hard to know how reliable the information is.

(L) [2013/07/08] [dbz] [OpenCL works on Nvidia cards after all?] Wayback!

>> McAce wrote:Yes, OpenCL 1.1 has been supported for a while, but the performance is usually not up to par.
 >> Dade wrote:NVIDIA has fixed OpenCL Titan drivers few weeks after the release. There was some known problem with multiple OpenCL applications (not only LuxMark) at the time of the release.
I assume they are now on par with all other NVIDIA OpenCL drivers (i.e. work well but they are slow).
Ok, thanks for clarifying this. But performance is still poor anyway.
 >> Dade wrote:LuxMark database accepts any result and it is quite easy to cheat. You have to be a bit careful while reading the results.
Ok, I only see people with NVIDIA cards cheating, btw. The results on AMD cards seem more realistic and consistent. It seems like NVIDIA customers feel like they have to compensate for something ...  [SMILEY :D]

(L) [2013/07/09] [Dade] [OpenCL works on Nvidia cards after all?] Wayback!

>> dbz wrote:Ok, I only see people with NVIDIA cards cheating, btw. The results on AMD cards seem more realistic and consistent. It seems like NVIDIA customers feel like they have to compensate for something ...  
Haha but they are mostly Hackintosh ([LINK http://www.hackintosh.com/]) users (i.e. Apple listed as OpenCL platform instead of NVIDIA), it seems they can not refrain them self from submitting bogus results.