GPU Ray-tracing for OpenCL
- Thread starter fellix
- Start date
It could be because that currently AMD's OpenCL implementation does not expose double precision support. It's still sort of supported (as in "you can still use it"), but not advertised in the extension string. Maybe Sandra didn't get that note so they don't use double precision on OpenCL?
Mintmaster
Veteran
Sorry, wrong link. It was right on the earlier page.
http://www.its.caltech.edu/~nandra/SmallptCUDA.zip
I checked it, and it's an old version with a few bugs. I'll put the new one up soon...
To my understanding, cudart64_30_8.dll comes with the older CUDA SDK 3.0 beta. The release version only comes with 30_14. So either this has to be recompiled with the latest SDK, or you'll have to get that file from some source (I don't have it, unfortunately, as I uninstalled the beta SDK and those files are gone).
You are lucky I'm lazy and take forever to upgrade things. 
I think this is what you want: http://www.megaupload.com/?d=PSR7QTOV (I'm assuming the download will be available eventually, atm it seems megaupload is still checking my file)
Btw, why not just download the old sdk?
I think this is what you want: http://www.megaupload.com/?d=PSR7QTOV (I'm assuming the download will be available eventually, atm it seems megaupload is still checking my file)Btw, why not just download the old sdk?
Mintmaster
Veteran
Damnit. How can I figure out which DLL's are needed to run a CUDA program? I thought cudart.dll and cutil64.dll were the only files I needed to put in the zip.
They used to be only cudart.dll, but they keep changing the files and make them incompatible, so they eventually decided to put some version numbers in the filename, therefore the cuda_30_8 thingy.
That worked! Thanks
My results are the same as cho's though. Performance is alternating between 0,94 and 1,25 GRays/sec.
straaljager
Newcomer
Hello Beyond3D,
After seeing these crazy results with SmallptGPU, I was wondering if someone with a GTX480 could take the time to do a little benchmark that measures the GPU raytracing performance with the free demo of Octane render (a GPU-only raytracing renderer). The latest demo (version 1.02 beta2) can be downloaded at http://www.refractivesoftware.com/downloads.html.
I uploaded two testscenes (spaceships and chess) that came with the previous demo versions of Octane render, but for some reason were not include in the latest version. If you don't know how to load scenes into Octane and use the render, these tutorial videos explain how it's done:
http://vimeo.com/groups/octanerender/videos/10155587
http://vimeo.com/groups/octanerender/videos/8965151
Would greatly appreciate it!
After seeing these crazy results with SmallptGPU, I was wondering if someone with a GTX480 could take the time to do a little benchmark that measures the GPU raytracing performance with the free demo of Octane render (a GPU-only raytracing renderer). The latest demo (version 1.02 beta2) can be downloaded at http://www.refractivesoftware.com/downloads.html.
I uploaded two testscenes (spaceships and chess) that came with the previous demo versions of Octane render, but for some reason were not include in the latest version. If you don't know how to load scenes into Octane and use the render, these tutorial videos explain how it's done:
http://vimeo.com/groups/octanerender/videos/10155587
http://vimeo.com/groups/octanerender/videos/8965151
Would greatly appreciate it!
straaljager
Newcomer
Sorry, forgot the link to the testscenes but couldn't edit my post http://www.mediafire.com/?31k1xrmmw1b (7MB zipped).
To load a scene, right-click in the graph editor (lower left panel), choose Add > Objects > Mesh and then choose the testscene file. The scene will be imported and a new button will appear in the graph editor. If you click on it, the scene will start rendering and will show samples/pixel, Msamples/s, FPS and rendertime.
To load a scene, right-click in the graph editor (lower left panel), choose Add > Objects > Mesh and then choose the testscene file. The scene will be imported and a new button will appear in the graph editor. If you click on it, the scene will start rendering and will show samples/pixel, Msamples/s, FPS and rendertime.
Broken Hope
Regular
Is it normal to get a ton of errors in the command window when running LuxRays?
If not how do I fix them?
If not how do I fix them?
I can import the .obj file, but when click on the object, the program just close.
It detected gtx480 as compute caps 1.0.
straaljager
Newcomer
Thanks for trying this, cho. I'm not sure why the program closes. Did you download CUDA drivers 3.0 (needed for the latest demo version 1.02 beta2)? It may be that Octane doesn't recognize GTX 480 yet. I have uploaded an .obj file (the chess scene) to http://www.mediafire.com/?wmemmuywdxm. (To load the scene just right-click in the graph editor, choose Add>objects>mesh and find "chess.obj". The scene will be imported and a new button with the same name will appear in the graph editor. When you click on it, it should start rendering right away).
straaljager
Newcomer
Thanks Cho. I have contacted Octane's developer about the problem. Sorry for repeating myself, but are you sure you have installed the CUDA 3.0 driver (can be downloaded at http://developer.nvidia.com/object/cuda_3_0_downloads.html)?
If that doesn't work, there's probably a compatibility issue with Octane itself. Thanks again.
If that doesn't work, there's probably a compatibility issue with Octane itself. Thanks again.
straaljager
Newcomer
Last try: maybe an older demo version (v.07a) will work. I uploaded it to http://www.mediafire.com/?2mvtiwtj4mj
Test scenes are included in this one and you don't necessarily need cuda 3.0.
Test scenes are included in this one and you don't necessarily need cuda 3.0.