Actually as I'm aware of Redshift already removed that so it can use all ram already. Could help to check but I think I remember that being mentioned
On Fri, May 29, 2015 at 6:32 PM, Tim Crowson <[email protected] > wrote: > 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]> > 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]] 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 >>> >>> >>> >>> >> > > > -- > Our users will know fear and cower before our software! Ship it! Ship it > and let them flee like the dogs they are! > > > -- > > > > > *Tim Crowson **Lead CG Artist* > > > *Magnetic Dreams, Inc. *2525 Lebanon Pike, Bldg C, Suite 101, Nashville, > TN 37214 > *Ph* 615.885.6801 | *Fax* 615.889.4768 | www.magneticdreams.com > [email protected] > > *Confidentiality Notice: This email, including attachments, is > confidential and should not be used by anyone who is not the original > intended recipient(s). If you have received this e-mail in error please > inform the sender and delete it from your mailbox or any other storage > mechanism. Magnetic Dreams, Inc cannot accept liability for any statements > made which are clearly the sender's own and not expressly made on behalf of > Magnetic Dreams, Inc or one of its agents.* > > > > > > -- > > > >
