The Titan X is actually a really great value though, especially if
you're a Redshift user. 12GB on a $1,000 card? Once they lift the
hard-coded 4GB geo cache limit (which they really should do sooner than
later), that 12GB is going to translate into not only faster renders,
but a much better ability to handle dense scenes with millions of
instances. I broke past 1 quadrillion triangles with a Titan Black
(cramming in 32M+ instances), and I hope I get to run that test again
with a Titan X someday.
-Tim
On 5/29/2015 10:28 AM, Leoung O'Young wrote:
Hi Tim,
You could be right.
We had a gtx 570 with only 1.5gb and it was performing better than the
970 with 4gb.
Soft is probably using the .5 of very slow memory.
Things are really slow only when we have the camera window open.
We are quite happy with the 970's in Redshift.
Would love to get our hands on the Titan X with 12gb but they are
rather expensive.
We have a gtx 670 4gb and a gtx 690 4gb but it is really 2 card in one.
We will do some testing with those cards and report back.
Thanks,
Leoung
On 29/05/2015 10:17 AM, Tim Crowson wrote:
Yeah this could possibly be happening, but indeed the scene would
have to be pretty dense. Fire up GPU-Z and see how many vram XSI
uses. I know that for Redshift, the devs had to add a patch just for
the 970 to actually ignore the 500MB of slow memory that Nvidia put
on the 970. Or something like that. I suppose if that section of
memory is being accessed by XSI, and since it's much slower than the
rest of the on-board memory, perhaps that could have an effect like
this? I'm talking a bit out of my area though....
(backstory: When Nvidia shipped the 970, they got a lot of
backlash.... the 970 technically does have 4GB of memory, but 500MB
of that operates at a speed that makes it virtually unusable for
things like rendering (and other stuff), and indeed early on caused
dramatic performance problems and slow-downs. So in reality, we only
have 3.5GB of usable memory to render with on that card. I do hope
they don't pull that crap again.)
-Tim
On 5/28/2015 8:51 PM, Raffaele Fragapane wrote:
If your "heavy" scene is truly heavy, past the 3.5GB mark, you might
be bumping into a known design limitation of the 970 that basically
craps itself if memory usage exceeds the 3.5 mark (even if you have
4 on board).
On Fri, May 29, 2015 at 11:37 AM, Leoung O'Young
<[email protected] <mailto:[email protected]>> wrote:
No, thanks for the suggestion.
On 28/05/2015 7:46 PM, Sven Constable wrote:
Manipulating heavy geo was a problem with ATI cards, nvidia
usually performes well. Did you add the xsi.exe in the
nvidia control panel?
sven
-----Original Message-----
From: [email protected]
<mailto:[email protected]>
[mailto:[email protected]
<mailto:[email protected]>] On Behalf
Of Leoung O'Young
Sent: Friday, May 29, 2015 1:20 AM
To: xsi
Subject: Heavy scenes with the GTX 970
We have switched some of our workstation using the GTX
970's, they preforms quite well rendering in Redshift.
A good bang for the buck. But we find the it is very
sluggish manipulating heavy geometry scenes inside Softimage
2915.
What is a better option?
Thanks,
Leoung
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