From: "Stephen van Vuuren" <AE-List@media-motion.tv>
To: After Effects Mail List <AE-List@media-motion.tv>
Subject: RE: [AE] VR Tools GPU/CPU VRAM limitations
Thread-Topic: [AE] VR Tools GPU/CPU VRAM limitations
Thread-Index: AQHUCYW6V61ZXHnPqU6043fvWFv8UaRq+aJA
Date: Thu, 21 Jun 2018 17:38:06 +0000
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>I'd guess having as much memory on the Graphics card as possible would imp=
rove your >chances of being able to render, but this business of not fallin=
g back to the CPU is untenable.

Thanks for the info although it confirms that VR Tools might not be ready f=
or primetime. That's my guess too. But without some way of calculating, do =
we know if 32GB is enough? And if SLI will get you there or does it have to=
 be a single card? The lack of info on this is disconcerting.=20

-----Original Message-----
From: After Effects Mail List <AE-List@media-motion.tv>=20
Sent: Thursday, June 21, 2018 1:31 PM
To: After Effects Mail List <AE-List@media-motion.tv>
Subject: Re: [AE] VR Tools GPU/CPU VRAM limitations

On Jun 21, 2018, at 9:19 AM, Stephen van Vuuren wrote:

> I can find no useful information on:
> =20
> 	* Is there a way to force CPU rendering?
> 	* How much VRAM is required and can you use SLI to split via multiple ca=
rds as 8+ GB VRAM cards are very expensive.
> 	* What frame sizes does the VR tools support? We have 5600 x 4200 and 80=
00 x 8000 - the weird part is simple projects are fine, but bring in lots o=
f layers, bitmaps and the errors begin.
>=20


The VR tools are GPU-only, and this has been a huge problem for us.  Due to=
 the nature of VR, the resolutions are often very big.  We were rendering 8=
000x4000.  We working working at quarter rez or smaller, happily rendering =
at half-rez to see our revisions.  Big mistake.

When it came time to render full-resoltion, most of our machines were incap=
able.  Among our 30 Macs we had just 4 that could do it.  Weirdly, we had o=
ther machines with the same graphics card and everything else that couldn't=
.  I guess we were lucky to have the 4, or else we couldn't have rendered.

I'd guess having as much memory on the Graphics card as possible would impr=
ove your chances of being able to render, but this business of not falling =
back to the CPU is untenable.


Brendan


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