Re: Redshift3D Render

[Stefan Kubicek]

So does Chrome btw. I also notice this wehn running my laptop without power supply. The GPU sucks the battery dry in an hour.

With Chrome closed it's 4 hrs. GPU acceleration can be turned off in Chrome though, don't know about Firefox.

Just a funny fact that I found...

After opening several tabs for looking for the Nvidia specs, I left them open.  I am using FireFox.

I hit play again and the fps dropped by half 24 fps.

Start scratching my head.  Closed the addtional tabs of Firefox, restarted Softimage and the speed was back to 50.7

So my guess is that this modern browser suck a lot from the GPU... pfff.

2014/1/9 Leonard Koch <leonardkoch...@gmail.com>

Ah interesting. That begins to explain it.

Thanks Emilio.

On Thu, Jan 9, 2014 at 5:36 PM, Emilio Hernandez <emi...@e-roja.com> wrote:

Yes Mirko tell the secret.  I don't want to break my mind thinking about memory clocks and bandwiths....

2014/1/9 Tim Crowson <tim.crow...@magneticdreams.com>

I just get "60.0 fps +"
How are you getting it display a value higher than 60? I'm pretty sure it the actual fps is higher, but the value in the viewport is capped at 60....
-Tim

On 1/9/2014 10:12 AM, Leonard Koch wrote:

I get about 28-31 out of my 680. Does anyone have a common explanation for that?

On Thu, Jan 9, 2014 at 5:10 PM, Emilio Hernandez <emi...@e-roja.com> wrote:

Hey Mirko I ran your script and I got 50.7 fps...

But then I remembered I have my displays plugged in to my 470.. hahaha.

Don't ask why, but when using AE with the displays plugged into the Ti,  AE does not like it and disables GPU for calculations...

Pffff.

2014/1/9 Mirko Jankovic <mirkoj.anima...@gmail.com>

Hey Tim

Would you be able to take 2 minutes of your tmie and run this ol python script for SI with your titan?

I'm getting weird results with an 780 in my home system outperforming titan a lot... well here is copy paste from forum if you are able to check it out as well.. thanks!:

itan: ~170 fps
780: ~245 fps

Go figure 
But I'm suspecting something weird with my titan system for some time will have to test further but would be great if anyone with titan as well could run it too?
This old python script:
Application.CreatePrim("Cube", "MeshSurface", "", "")
Application.SetValue("cube.polymsh.geom.subdivu", 831, "")
Application.SetValue("cube.polymsh.geom.subdivv", 800, "")
Application.SetValue("cube.polymsh.geom.subdivbase", 800, "")
Application.SetValue("Camera.camvis.refreshrate", True, "")
Application.SetDisplayMode("Camera", "shaded")
Application.DeselectAll()
Application.SetValue("PlayControl.Out", 5000, "")
Application.DeselectAll()
Application.GetPrim("Null", "", "", "")
Application.SelectObj("Camera_Root", "", "")
Application.CopyPaste("Camera_Root", "", "null", 1)
Application.SelectObj("null", "", "")
Application.SaveKey("null.kine.local.rotx,null.kine.local.roty,null.kine.local.rotz", 1, "", "", "", "", "")
Application.SetValue("PlayControl.Key", 5000, "")
Application.SetValue("PlayControl.Current", 5000, "")
Application.Rotate("", 0, 8000, 0, "siAbsolute", "siPivot", "siObj", "siY", "", "", "", "", "", "", "", 0, "")
Application.SaveKey("null.kine.local.rotx,null.kine.local.roty,null.kine.local.rotz", 5000, "", "", "", "", "")
Application.FirstFrame()

Just paste in python script run and hit play.

Thakns!

On Thu, Jan 9, 2014 at 3:34 PM, Tim Crowson <tim.crow...@magneticdreams.com> wrote:

We've been testing 1 Titan vs. 3 and so far, the speed increase of the triple-Titan box is holding at about 2.45x. In an email exchange (or maybe it was on the forums, can't recall) it was mentioned that on the topic parallelization, Pixar had determined that even for them, 4 units together (of whatever, not necessarily Titans) was the max they could really go before it started to cost more money than it was worth. In our case, I'm thinking 3 might be our max, based on some nerdy mathematics by one of our IT guys analyzing render times per shot, per frame, hardware/software costs, rack space used, etc.

But hey, Redshift aside, the Titan in my workstation is doing wonders for my viewport performance in Soft. I had a 58M, 2500-item model derived from a CAD file the other day, and this thing was letting me tumble around it at ~15fps in Shaded mode. That ain't shabby!
-Tim

On 1/9/2014 6:11 AM, Paul Griswold wrote:

There was a discussion on the RS forums about it.  I don't recall the numbers, though.  I don't think the speed of the PCIe slot made a huge difference.  It's really all about the speed of the card.

Also, although it doesn't load the entire scene into your card's memory, the more memory your card has, the better it is.  

But overall, for the type of work I'm mainly doing these days, it's extremely fast.  In fact, it's so fast that I was finding the bottleneck was the time taken to export the mesh to Redshift, not rendering.  Redshift has a proxy system like Vray & Arnold, but you have to manually create proxies per object & my scene had hundreds and hundreds of objects, so I didn't have time to create them.  Therefore, it was creating a renderable mesh per frame - so on a frame that took 28 seconds to render, 20 seconds was spent exporting the mesh and 8 seconds were spent on rendering.  But again, it's a beta and they're continuing to improve things like the proxy system.

Once I'm caught up I'm hoping to try rendering the classroom scene and see how it does.

-Paul

ᐧ

--

--

 

--

-------------------------------------------
Stefan Kubicek
-------------------------------------------
keyvis digital imagery
Alfred Feierfeilstraße 3
A-2380 Perchtoldsdorf bei Wien
Phone: +43/699/12614231
www.keyvis.at ste...@keyvis.at
-- This email and its attachments are --
--confidential and for the recipient only--