In active shade mode with this test scene works perfectly. When I try to render it gives me this and does nothing, just black screen. I try to use CUDA. I am just using the latest nightly build. More questions: Should I enable SLI or disable while using cuda render? How many gpu cards should I e…

Should I enable SLI or disable while using cuda render? No, make sure SLI is off. V-Ray can use all the GPUs by itself (you can configure the GPUs that are going to be used with the tool named ocldeviceselect.exe that comes with the V-Ray installation) and SLI is not needed and can cause troubles. …

I think its 4 gigs, but its a 970 so its just 3,5 for some reason. Doesn’t matter. I always have the latest drive, now its 347.52 I dont know if that problem is still exist with that one.

Do you have any recommendation for when vray rt just doesn’t start with cuda? CPU render is fine, its going perfect even in vray rt, but when I try to use cuda render the vray render server administrator doesn’t pop up. When I start manually it says “there is another server already running”. It migh…

[image] Grant Warwick- Mastering Vray: Material Ideas Needed. Do you have any recommendation for when vray rt just doesn’t start with cuda? CPU render is fine, its going perfect even in vray rt, but when I try to use cuda render the vray render server administrator doesn’t pop up. When I start ma…

Then why is that even an option?:slight_smile:

[image] Walk-in-wardrobe Can you make sure that you are not running V-Ray as a service ? Windows restricts the access to the GPUs of the services. However no. I dont think so. (Im not even sure what is that difference) I do what I always do. Start 3ds max, the dongle is in, start “Launch vray …

Can you double check this ? Please go to Windows Control panel > Admin. Tools > Services and look for VrayRTSpawner service If it is there and running, please try to stop it and run a test with RT / GPU again. [2015-03-17 111425}.jpg]

Hello Tashko Thanks for replying. I disabled vray as a service but it didnt help me much I’m afraid. Then tested it, first I got this: Then second and third try, for third try there was just a black screen, nothing happened the render kept calculating: What do you reckon? Thanks, Denes [1.jp…

Thank you very much for the quick response. Can you try to restart 3ds Max and on a new simple scene enable GI from the render settings and change both engines to Brute force / brute force then satrt RT/Cuda again.

With both set to brute force, it works. Thanks! Denes

Vray RT problem

V-Ray for 3ds Max V-Ray for 3ds Max :: Issues

savage309 March 16, 2015, 10:40pm 5

Can you make sure that you are not running V-Ray as a service ? Windows restricts the access to the GPUs of the services.

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Vray RT problem

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