mult gpu setup

A public forum for discussing and asking questions about the demo version of Octane Render.
Forum rules
For new users: this forum is moderated. Your first post will appear only after it has been reviewed by a moderator, so it will not show up immediately.
This is necessary to avoid this forum being flooded by spam.
Post Reply
rloncohen
Licensed Customer
Posts: 26
Joined: Fri Oct 01, 2010 3:10 pm

hi,
i am just putting together my octane box. i have a evga gfx580 3 gb and a evga gfx 560 2gb. what is the best way to deal with the driver issues? oh the 560 will have monitors attached.
thanks much for any guidence.
rich
User avatar
radiance
Posts: 7633
Joined: Wed Oct 21, 2009 2:33 pm

Just install the latest drivers from www.nvidia.com for Geforce cards and you should be ok.
Both are Geforce so they will work together nicely with octane.

Radiance
Win 7 x64 & ubuntu | 2x GTX480 | Quad 2.66GHz | 8GB
User avatar
smicha
Licensed Customer
Posts: 3151
Joined: Wed Sep 21, 2011 4:13 pm
Location: Warsaw, Poland

radiance wrote:Just install the latest drivers from http://www.nvidia.com for Geforce cards and you should be ok.
Both are Geforce so they will work together nicely with octane.

Radiance
Next week I am ordering gtx 580 3gb. I am thinking about buying additional gtx 580 3gb. Could you please advice me how faster Octane is with 2 card vs with 1 card. Is 1350W power supply enough for 2 these two cards?
3090, Titan, Quadro, Xeon Scalable Supermicro, 768GB RAM; Sketchup Pro, Classical Architecture.
Custom alloy powder coated laser cut cases, Autodesk metal-sheet 3D modelling.
build-log http://render.otoy.com/forum/viewtopic.php?f=9&t=42540
User avatar
radiance
Posts: 7633
Joined: Wed Oct 21, 2009 2:33 pm

smicha wrote:
radiance wrote:Just install the latest drivers from http://www.nvidia.com for Geforce cards and you should be ok.
Both are Geforce so they will work together nicely with octane.

Radiance
Next week I am ordering gtx 580 3gb. I am thinking about buying additional gtx 580 3gb. Could you please advice me how faster Octane is with 2 card vs with 1 card. Is 1350W power supply enough for 2 these two cards?
Hi, octane scales linear as of 2.5x, so the speedup is 2x for 2 cards,
800 watt or more should be enough for 2x GTX580, but I would get a 1000 to be prepared.

Radiance
Win 7 x64 & ubuntu | 2x GTX480 | Quad 2.66GHz | 8GB
User avatar
steveps3
Licensed Customer
Posts: 1118
Joined: Sat Aug 21, 2010 4:07 pm
Location: England

You could get away with a 600W PSU. The latest cards are pretty efficient. I think the 560 only draws about 160watts
(HW) Intel i7 2600k, 16GB DDR3, MSI 560GTX ti (2GB) x 3
(SW) Octane (1.50) Blender (2.70) (exporter 2.02)
(OS) Windows 7(64)
cameo
Licensed Customer
Posts: 4
Joined: Sat Jul 16, 2011 10:04 pm

Hi sorry for borrowing your thread rloncohen but I have my own question about multi gpu setup I hope someone would
be kind enough to answer.

I'm thinking of using two different cards where one is just a cheap option to use as the display card. Now in Octane
I'm aware that it's possible to specify the non-display card for rendering in the prefs. I'm just wondering how you would go
about this in other programs be it photoshop/maya/max etc, how would they know which card to use as I don't remember
seeing a similar option in those programs and obviously I want those to use the powerfulc card also?

Can anyone who runs a setup like this and uses maya/max/photoshop on the same machien explain how this works in practice?

Many thanks
cameo
Licensed Customer
Posts: 4
Joined: Sat Jul 16, 2011 10:04 pm

Anyone?

Would be a great help to me.
User avatar
Jaberwocky
Licensed Customer
Posts: 976
Joined: Tue Sep 07, 2010 3:03 pm

I tried it with an ATI card as the display card and my GTX460 running headless ( IE the monitors were running off the ATI card.)

The system will use which ever driver is running the monitor and ignore the headless card.Therefore Photoshop and every other program will just use whatever card is powering the monitors.

Hope that explanation helps

Jabba
CPU:-AMD 1055T 6 core, Motherboard:-Gigabyte 990FXA-UD3 AM3+, Gigabyte GTX 460-1GB, RAM:-8GB Kingston hyper X Genesis DDR3 1600Mhz D/Ch, Hard Disk:-500GB samsung F3 , OS:-Win7 64bit
User avatar
t_3
Posts: 2871
Joined: Tue Jul 05, 2011 5:37 pm

Jaberwocky wrote:I tried it with an ATI card as the display card and my GTX460 running headless ( IE the monitors were running off the ATI card.)

The system will use which ever driver is running the monitor and ignore the headless card.Therefore Photoshop and every other program will just use whatever card is powering the monitors.

Hope that explanation helps
Jabba
in fact it's the nvidia driver that blocks any access to the cuda/physx implementation if it finds a non-nvidia card in the system. there are hacks to avoid that, but in general you shouldn't mix ati and nvidia.

a headless card on the other hand is no problem whatsoever. i even run complete headless systems without any problem...
The obvious is that which is never seen until someone expresses it simply

1x i7 2600K @5.0 (Asrock Z77), 16GB, 2x Asus GTX Titan 6GB @1200/3100/6200
2x i7 2600K @4.5 (P8Z68 -V P), 12GB, 1x EVGA GTX 580 3GB @0900/2200/4400
Post Reply

Return to “Demo Version Questions & Discussion”