[Bf-cycles] still memory problem with cuLaunch on GTX780Ti 3GB with empty scene

Piotr Arłukowicz piotao at inf.ug.edu.pl
Wed Oct 14 00:30:14 CEST 2015


Hi
I'd like to clarify that this problem does not occur so often.
Previously I've used Mint Linux 17.1/17.2 based on ubuntu = opencollada,
opensubdiv did not even compile, cycles unusable in gpu mode.
Now I'm on Mint Linux 17.2 based on debian = ALL compiles, cycles is
working like a charm for CPU and GPU but still exp mode is falling into
"out of mem" dead end.

cheers,
pio



Piotr Arłukowicz, PhD, BFCT
University of Gdańsk, Faculty of Mathematics, Physics and Informatics,
Dept. of AI,
Wit Stwosz 57, 80-952 Gdańsk, room 121, tel.: +48585232151,
https://inf.ug.edu.pl/~piotao
Polish Blender Course: http://polskikursblendera.pl/ [PL]

2015-09-15 17:09 GMT+02:00 Piotr Arlukowicz <piotao at polskikursblendera.pl>:

> Hey
>
> something is definitely not right with cycles or with my system, because
> of the old and known memory problem with cuLaunch.
> The exact error is:
> CUDA error: Out of memory in
> cuLaunchKernel(cuPathTrace,xblocks,yblocks,1,xthreads,ythreads,1,0,0,args,0)
> Peak mem shown by blender is 70.98M during rendering.
>
> Works: GPU compute with supported mode
> Fails: GPU compute with experimental mode
> System: Mint 17.1,
> Blender hash dbe1829...
> GPU: GTX780Ti, ram 3070M
>
> please help!
>
> I've read stackexchange explanations about memory problems and this seems
> to be not the case (?) here, because I have at least half of memory
> unoccupied...
>
> Here is nvidia-smi test while blender IS rendering a scene in supported
> mode.
>
> +------------------------------------------------------+
>
> | NVIDIA-SMI 352.21     Driver Version: 352.21
> |
>
> |-------------------------------+----------------------+----------------------+
> | GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr.
> ECC |
> | Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute
> M. |
>
> |===============================+======================+======================|
> |   0  GeForce GTX 780 Ti  Off  | 0000:02:00.0     N/A |
> N/A |
> | 50%   67C    P0    N/A /  N/A |   1459MiB /  3070MiB |     N/A
> Default |
>
> +-------------------------------+----------------------+----------------------+
>
> I know that I'm using desktop enviroment, but honestly, there is only half
> of ram on that card occupied. This problem is the same since several
> revisions and I'm slowly made myself upset that I can't use the hardware.
> 3GiB of ram, honestly, SHOULD be enough for an empty scene!
>
> What I'm doing wrong?
> please help or at least say something...
>
> pio
>
>
> ​Piotr
> ​ Arlukowicz, BFCT​
>
> ​*YT: /user/piotao?feature=guide*
>  *FB:* */polskikursblendera* *TW:*
> */piotao*
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> <https://www.blendernetwork.org/piotr-arlukowicz>*
> *Polski Kurs Blendera:* http://polskikursblendera.pl
>
>
>
>
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