vrayRT on 16+cards? How many cards are supported?

[losbellos73]

where did you see that?

[Dariusz Makowski (Dadal)]

Cant remember the exact model I found it was 2 years ago but quick google popped up this one. http://www.amazon.com/HP-671798-001-.../dp/B008G42HS0

[losbellos73]

cool thx, but my card had 4 slot I think.
still cheaper.

[losbellos73]

and there is one more thing. 300watt max 7*300W = 2.1 kw... it will need at least 2.5-3kw psu. Is that available anywhere?
Lets put this to the equation too...

[3LP]

Hey,

I had a quick look yesterday, and I think that you probably need to go for this expansion in staid of the other one :

http://www.onestopsystems.com/3U_Gen3.php

The major difference is that this one gives 16x pci for double-wide CG, your's is for single width CG, which is not the case for any of the new CG out there.
It also has three 3000-watt redundant power supplies and 4 pci cards that can share the 16 cg between 4 computer or all the cg on one...
IMO, this product seems more accurate with what you try to do, the only hold off is that it's been priced at $18k for the rack...

Anyway, I would still be interested to see if this work, although it start to be cheaper to buy 4 nodes with each 4 CG in them and spawn...

Stan

[losbellos73]

yeah this one is really expensive!!! 18k$ it is 18 video card's price...

The guys responded and asked what expansion card and video card i would like to see tested with vrayRT. Let see if they do that...

So far 3-4 node wins with 7 cards inside, connected with 10G cards. Damn I hate network...

[super gnu]

did you consider smaller expansion boxes? if you can find say a 4 node expansion box, ideally pcie gen 3, you could put 4 of them connected to a single workstation, each with its own pcie3 slot to provide bandwith. since (and im guessing here) pcie 2 x16 is sufficient for vrayRT to have enough bandwith, then pcie3 doubles this bandwith, splitting a pcie3 x16 slot between 4 cards might not be a big problem.


then youd have your 16 cards in one workstation.

[Dariusz Makowski (Dadal)]

I think in order to make a good decision here we actually need some numbers from chaos. How much speed do we actually need?

[losbellos73]

this is absolutely true, the problem is that 16 cards might not be enough in a kitchen scene with full of glossy materials ect.
24-32 Card could be a solution I think. Anyways thanks for the heads up on this I look for smaller boxes maybe there is some better price ratio.

[Dariusz Makowski (Dadal)]

What GPUS do you plan to use is the 1st question? Also what resolution do you want it to be real time in ?

[super gnu]

id steer well clear of investing in something like this for now.. it might give you waht you need, but with cards topping out at 6gb (for sensibly priced ones) what happens when you need more and want to upgrade? that wont be so far down the road imho. 6gb isnt a lot.

[losbellos73]

6GB is ok for medium scenes, I don't want to render a country!
It is ... Nvidia Titan cards.
(I never want to use them, always problem with drivers, but it seems cuda wins. BTW is there any performance compare thread? like ati 7970 6Gb vs Nvidia Titan?)

720P realtime is ok (very little noise). For final renders I will allow only 10 seconds...
I am really FO on this, so it better be capable rendering my test scene(!!!)...(full of glossy reflection refraction, textures etc, strong hdri and complicated corners with highlights.)

[Dariusz Makowski (Dadal)]

Have you thought of tesla cards? They are faster for this if I'm correct.

[losbellos73]

will see I buy the best solution for all around rendering.
But seeing the vrayRT forum with the posts... man... I need maybe a 100 card...
(sad)

[super gnu]

well lets be honest you are trying to do something a bit difficult.. realtime noise free vray renderingwith all the trimmings.. .. come back in a few years, or get into game engines and live with the compromises.. or spend $100k on hardware.