103 replies to this topic

[Wayang-NT]

OS X 10.8 build 12A206j

[Funky frank]

Hi,

I have problems regarding OpenCL support. I use OSX 10.6.8 and a ATI HD5570 with 1GB amount of RAM, Core2Quad 2,5, 4GB Ram.

There are four problems regarding the test in Luxmark:

1. The amount of usable graphics RAM is wrong, only 512MB are usable. How can I change this? Do I need to use another ATI personality or bin patch the kext?

2. The processing on most scenes of Luxmark never ends, it shows these pixelated results. This happens also with CPU only. What is wrong here?

3. How do I enable OpenCL 1.1?

4. Also the amount of system RAM seems to be wrong.

Thanks for help.




BTW: I cannot upload any image to this forum anymore. Why?

[mitch_de]

1. Amount of OpenCL VRAM <> amount of VRAM on the card, thats normal and is limited by gpu type
2. OpenCL 1.1 is available only with 10.7, OpenCL 1.2 with 10.8+

Luxmark is an benchmark and runs all available scenes exact 120 sec long. So you must wait that time.
Because of speed diffs between different gpu+cpu systems the rendered image of the scene vary much in case of clean+fine vs pixels!
With single gpu card (not highend AMD 79xx) you will not get an clean image within 120 Sec benchtime. That would take much  longer for an cleaner image (10 Min... hours) depends on gpu power + scene.

If you want to let it render longer (than 120 sec) time for an more cleane+fine image, you can set Mode to interactive ( gpu only).

Beside that benchmark, Luxmark uses slg to compute OpenCL .
Its used by Luxrender and Blender (with slg) in real life to render gpu accell raytraycing.
Visit http://www.luxrender.net/en_GB/index to get more informations.
Luxmark has focus on benching, not raytracing for production!

[Funky frank]

Mitch, thanks. Is the openCL-renderer also included in Blender 2.63? Where do I get a version with SLG included?

I read that since OSX 10.7.4, there is a huge OpenCL performance boost for all ATI cards - is this correct? So it would be worth a thought to upgrade to 10.7.4 now?

[mitch_de]

OpenCL speed improvemnts depends on gpu tyoe. For lowend / midrange (like yours) there is no speed diffs but some bugfixes.
I get same OpenCL speed since 10.6 (now 10.7.5 dev) with Nvidia 9600 GT. AMD is same for lowend cards - only a bit more bugs (OpenCl apps didnt work correct) were fixed (OpenCl on AMD makes more probs that nvidia)
Blender needs an slg (smart lux gpu) plugin. You get it from the luxrender page (with install instruktions).

[Funky frank]

Thanks. I cannot find any download of smart lux plugin for Blender 2.6 OSX.

[mitch_de]

You must DL the Luxrender RC1 (OS X, standalone) . Some files which are needed for Blender are within that DL.
Maybe some more  informations (older install way) may help to understand how to install that.
http://www.luxrender...on_instructions
If problems you can use the Luxrender Forum:
http://www.luxrender...php?f=16&t=1964

[Funky frank]

thx

[hannibal1969]

hi gents,

Just upgraded to Mountain Lion RTM but no CL. According to netkas it should be working out of the box. I have nvidia Quadro 1000M 1GB.
I got error 2012-07-12 03:10:24 - RUNTIME ERROR: PathOCL kernel compilation error

Any ideas ?

575]Quadro 1000M:

575]  Chipset Model: Quadro 1000M

575]  Type: GPU

575]  Bus: PCIe

575]  Slot: Slot-1

575]  PCIe Lane Width: x16

575]  VRAM (Total): 1024 MB

575]  Vendor: NVIDIA (0x10de)

575]  Device ID: 0x0dfa

575]  Revision ID: 0x00a1

575]  ROM Revision: 70.08.50.00.04

[mitch_de]

Check other OS X OpeCL benches like OceanWave (less complex code). Maybe OS X 10.7.5 dev / 10.8 GM has problems with luxmark (very complex code) on some cards (bugs in driver, not in luxmark).

[hannibal1969]

mitch_de, on 12 July 2012 - 05:16 AM, said:

Check other OS X OpeCL benches like OceanWave ....

doesnt work either "Error Failed to initialize OpenCL mostly by OpenCL driver didn't knw your gpu ...."

Worked with 10.7.x

Thx

[mitch_de]

Then you must wait for Drivers updates.
Some kind of gpus, which apple doesn support official may not work with OpenCL even with later updates.
So your problem maybe cannot fixed with the known OpenCL patch.
Does OpenCL info (very lowlevel+easy access to OpenCL driver) works ?
It shows (run in Terminal )some Infos about available OpenCL devices.
At least CPU is shown as OpenCL device (0) - if also gpu shown as OpenCL device (1,....)  your problem may get fixed with later driver updates. If OpenCL Info fails (only CPU info) you may not get that fixed ever.
OpenCL Info is within the OpenCL OceanWave (show package content..., ./resources/oclinfo )

[hannibal1969]

Thx I will verify later. But is OpenCL worked flawlessly on 10.7.5 so did CUDA which isn't working either now.
Upgrading to 10.8 was easy but I have a few issues now. I think to go back to 10.7.5.
Power management (Sleep) doesnt work, Cuda and OpenCL doesnt work.
I have patched Intel Power Management Problems is I think something with P-States because I get error 18 but I will ask in other forum cause
its too offtopic. (Sleep works - but wake up stops screen is corrupted or freezed mouse works)

Thx !

[hannibal1969]

[Device 0]
Name:  Quadro 1000M
Vendor:  NVIDIA
Type:  GPU
Device Version:  OpenCL 1.1
Driver Version:  CLH 1.0
Compute Units:  2
Work Group Size:  1024
Clock:  1400 MHz
Global Memory:  2048 MB

Only OpenCL1.1 ... ?

[mitch_de]

Yep, read netkas forum. http://forum.netkas....pic,2774.0.html

[hannibal1969]

I Did put the lib file replacement in GeForceGLDriver.bundle as suggested by netkas. But Still I got the problem. I have 2 issues left to be a perfect LM GM. One is sleep the other is OpenCL. Would be nice to get this beeing fixed :-)

[Moviemakergr]

10.8 GM and nVidia 560Ti

 LuxMountain.png   864.02K   65 downloads

[mitch_de]

Thanks. If possible please run at least also the midrange complex scene SALA too. Luxball scene is very less complex (puts not so much load on the gpu as the others).

[iceage2609]

v2 Beta2 new scene room, GTX285 room only ... =127 :-(

and  sala = 261 ... :-(

[Nanael]

With my HD6870 on ML i got 291


With my HD6870 and CPU i3 2100 on ML i got 334