OTOY Forums

Hi there.
i just purchased a gtx 590 and i am a bit surprised that in octane devices it shows
only one card with 512 cores , shouldn't it show two cards with the 1024 cores ,
please , somebody with the same card can help
cheers
Rico

You added the second card to the cuda devices?? but possibly also cos multi gpu is broken atm. should be 2 x 512cores/1.5gb
try 2.48 this week
perhaps too SLI is enabled and is affecting the reporting? I think you can disable SLI in the nvidia options.

pixelrush wrote:You added the second card to the cuda devices?? but possibly also cos multi gpu is broken atm. should be 2 x 512cores/1.5gb
try 2.48 this week
perhaps too SLI is enabled and is affecting the reporting? I think you can disable SLI in the nvidia options.

As pixelrush said, you need to be sure, both devices are set to "Active" in the CUDA management settings or whatever is it called.

thanks guys.
i have no SLI capable motherboard , when you say , i have to make sure both devices are active
where do i do that ?
Rico

You change this setting directly in Octane. If you go to the preferences in Octane, there will be options to choose what gpus to activate/deactivate.

thanks for that.
but it shows only one of my dual card .??? with a GTX 590 it should show 2 cards
Rico

Are you sure you're using CUDA 3.0?If i'm not mistaken, multi-gpu won't support 3.2 until the new version is released later this week.

http://www.refractivesoftware.com/forum ... =24&t=6270

"We are rewriting the multi-GPU feature to resolve this issue, also adding some new features, so as an intermediate solution we will be supplying both CUDA 3.2 and CUDA 3.0 solutions.

CUDA 3.2: Recommended version with better support for modern GPUs (like GeForce GTX 4xx/5xx), which should be used if you are not rendering on more than one GPU.

CUDA 3.0: Legacy version for correctly functioning multi-GPU support."

i am using the test version 2.47 and as much as i know there is no choice between
cuda 3.0 and 3,2 .
I am instaling cuda toolkit 4 at the moment and will see if that helps.
thanks for al your help.
Rico

ribrahomedesign wrote:thanks for that.
but it shows only one of my dual card .??? with a GTX 590 it should show 2 cards
Rico

Yep, it should show 2 devices: Geforce GTX590 (0 compute 20) and Geforce GTX590 (1 compute 20). They might be both in the "Active" bracket, in which case you need to click on the bracket to roll-out with both cuda devices to show up.. if that does not happen, something is definitely wrong.

Be sure to switch Multi-GPU off within Nvidia Control panel as well.

nope ! doesn't show any second card ,only ( 0 compute 20 )

and on the nvidia control panel i dont know where to switch of multy gpu ??
maybe i reinstal the card again ? what do you think ?
cheers
Rico