GTX 1080 and vray RT

[glorybound]

Okay, that was my understanding, but other posts seem to say the opposite.

[mitviz]

Yes Bobby, I might have not been clear enough, the VRam doesn't stack up.
If a scene takes 7 Gb to render and you have 2 cards, one with 6 Gb and the other with 8, you will be able to render on the one with 8Gb as the 7Gb fits in, but it wont render on the 6Gb as it will not fit in the Ram of that card.
Like I said, I have 5x 12Gb, but that doesn't give me 60Gb, it only give me the ability to render scenes that will be up to 12Gb.

So the 1080 are the best as of today as they have 8Gb or if you dont want to spend as much, the 1070 is a good alternative as well as it also has 8Gb. Slower but also cheaper

Hope this make sense now.

Cheers

dam man, 5x 12GB, uff, how large a scene have you been rendering with those babies?

[Sbrusse]

I've rendered 10Gb stills already but it's still hard to get productions jobs inside GPUs, our usual scenes renders with 50-60 Gb on CPU renders.

[mitviz]

I've rendered 10Gb stills already but it's still hard to get productions jobs inside GPUs, our usual scenes renders with 50-60 Gb on CPU renders.

huh? you mean you rendered a stil that uses 10Gb of vram? or the scene itself is 10Gb in size? and the cpu render 50-60Gb? dont get that

[Sbrusse]

I mean that our usual renders does use 50-60 Gb of ram when rendering with CPU.
But I've been able to render some easy/small productions renders on GPU because they where using only 10Gb of VRam.

Does this make sense?

[mitviz]

I mean that our usual renders does use 50-60 Gb of ram when rendering with CPU.
But I've been able to render some easy/small productions renders on GPU because they where using only 10Gb of VRam.

Does this make sense?

aha, i then wonder what those larger 50-60 Gb scenes would use interms of vram, maybe something for the quadro m6000 but i had a scene last week rendering that was using almost 28 Gb of normal ram while using only 3.7Gb of vram so i guess it all depends on the scene, its hard with gpu to determine how much a scene will use until you actually run it

[savage309]

Keep in mind that when rendering on the GPU in the nightlies you need (far) less CPU memory compared to the stable (in most cases).

Best,
Blago.

[Sbrusse]

Haven't tried the latest nightlies but those scene, when I try to render on GPU just crash max.
I'll try with the latest nightly some day to see, but I doubt it would work
We are still heavily relying on plugins that are bot supported by RT anyways

[glorybound]

My concern is 8MB just won't cut it. I am sure my exterior scenes, which uses around 70MB, will not be realistically viable for at least 5 more years. Interiors, I don't know, I don't do a lot of interiors. 8MB still sounds way to small to be a realistic solution for final renders. Small scenes or light testing, okay, but my 6MB card is fine for that. When 24MB's arrive, at a decent price, maybe.

[savage309]

It does not have to be a recent nightly (few months old is fine).
If you have crashing scenes please send them over, so we can fix them.

Best,
Blago.

[mitviz]

My concern is 8MB just won't cut it. I am sure my exterior scenes, which uses around 70MB, will not be realistically viable for at least 5 more years. Interiors, I don't know, I don't do a lot of interiors. 8MB still sounds way to small to be a realistic solution for final renders. Small scenes or light testing, okay, but my 6MB card is fine for that. When 24MB's arrive, at a decent price, maybe.

[ATTACH=CONFIG]33055[/ATTACH]

well i notice your scenes are really heavy, especially your last renders of the mansion, you are using some plants that are each over 1 million poly and textures are too large, a tonne of room for optimisation,especially those from vmmp which kills vram, all of these things i started to notice when doing gpu rendering, your plants especially, i have done some masssive scenes with over 100 million polys not using more than 25 Mb of ram

[glorybound]

I am so over spending more time optimizing than creating. I'm rendering my exteriors in less than an hour, at 4K, so I am good. Yes, I can spend an extra day optimizing to render in 1/2 the time, but that doesn't make much sense.

[glorybound]

I did order the GTX 1080, so we'll see how it goes. The 980TI will power my 4K monitor and I'll use the GTX 1080 for V-Ray RT. I'll work on optimizing my interiors and see if I can get an interior out faster on my GPU faster than my CPU's.

[mitviz]

I did order the GTX 1080, so we'll see how it goes. The 980TI will power my 4K monitor and I'll use the GTX 1080 for V-Ray RT. I'll work on optimizing my interiors and see if I can get an interior out faster on my GPU faster than my CPU's.

gpus will maybe take the same time or idk but for exteriors is where it excels, in minutes you can get some really clean renders

[mitviz]

I am so over spending more time optimizing than creating. I'm rendering my exteriors in less than an hour, at 4K, so I am good. Yes, I can spend an extra day optimizing to render in 1/2 the time, but that doesn't make much sense.

am trying to come up with a process for it all, like for example batch processing in photoshop of all scene textures at once, and making lower poly trees, something that we lack now in this rendering business, everyone is making some crazy high poly plants for example, idk why but those expecially kill render time