We settled on 2GPUs for most machines. A couple have 3. Workstations have 1. Like Matt and Mirko said, because of non-linear performance, you'll need to determine at what point you want to parallelize.

And yes, you can have a machine with 4 cards, and 4 instances of RS each rendering on a separate card. However, be advised that all 4 instances of RS/XSI will pull from shared resources like the CPU and system RAM.

If you can swing Titan Xs, their 12GB of vram make a huge difference in performance, even if the specs of the card itself might not seem as appealing as the 908Ti.

-Tim

On 1/19/2016 2:52 AM, Matt Morris wrote:
When I was at A Large Evil Corporation we replaced around 40 cpu nodes with 8 dual gpu nodes. With 2 cards the scaling is pretty good (around 1.85x). With 3 or 4 cards it would definitely be worth doing one frame per gpu.

On 19 January 2016 at 00:39, Artur Woźniak <[email protected] <mailto:[email protected]>> wrote:

    SO the question.
    How do you setup your farm. Which is better? Multiple cards per
    frame or a card per frame?

    Artur

    2016-01-19 0:50 GMT+01:00 Tim Crowson
    <[email protected]
    <mailto:[email protected]>>:

        We're use a 'garden' really... about a dozen dedicated
        machines, most with 2xTitanX cards, and we have some
        workstations that can kick in if needed. You can get through a
        lot with far less than before. And if you need to upgrade,
        just pop in a different card. We went from dual 770s to dual
        TitanXs with zero hassle and the performance improvement was
        as expected: awesome.

        -Tim




        On 1/17/2016 11:38 AM, Graham Bell wrote:
        I'd really like us to look at Redshift but too embedded with
        Vray. Keeping an eye on the possible Max integration as that
        could turn heads.
        How big a farm are people using for Redshift, because we do a
        lot of rendering.
        On Fri, 15 Jan 2016 at 16:57, balazs kiss <[email protected]
        <mailto:[email protected]>> wrote:

            Hi Morten,

            we're also on redshift here, and I've made another small
            studio to switch too ( by showing a few frames and the
            corresponding render times ).. great stuff :)

            On Fri, Jan 15, 2016 at 2:54 AM, Kris Rivel
            <[email protected] <mailto:[email protected]>> wrote:

                Loooooove RS! Switched over after briefly playing
                with Vray and never looked back. It has been amazing
                so far.

                Kris

                On Fri, Jan 8, 2016 at 8:11 AM, Ognjen Vukovic
                <[email protected] <mailto:[email protected]>> wrote:

                    I thought they mentioned having rendermaps in
                    soft actually working partially, they were just
                    looking for a method on how to implement it
                    across the board.
                    I could be completely wrong though. Either way i
                    would like  the volumes more :), sorry baking guys.

                    On Fri, Jan 8, 2016 at 12:13 PM, Matt Morris
                    <[email protected] <mailto:[email protected]>> wrote:

                        I'd say the timescale for
                        rendermapping/baking will be months rather
                        than weeks - seems like complex volume
                        rendering will come before baking.

                        On 8 January 2016 at 09:28, Ognjen Vukovic
                        <[email protected]
                        <mailto:[email protected]>> wrote:

                            It wasn't supported up till now, I think
                            they will be introducing it in the coming
                            weeks.

                            On Fri, Jan 8, 2016 at 9:18 AM, James De
                            Colling <[email protected]
                            <mailto:[email protected]>> wrote:

                                sorry for the potentially silly
                                question, but how is redshift with
                                Rendermap? we use it extensively with
                                MR, and would need redshift to have
                                the same capability

                                James,

                                On Fri, Jan 8, 2016 at 8:01 PM,
                                Morten Bartholdy <[email protected]
                                <mailto:[email protected]>> wrote:

                                    Wow, it is quite impressive what
                                    an impact Redshift has made already.

                                    I have done a fair amount of
                                    testing with Redshift too and
                                    find on average scenes to be 5-10
                                    times faster than Arnold with
                                    comparable quality, plus a number
                                    of things are simpler to set up
                                    the way you want it, in part
                                    because of the rapid feedback in
                                    the renderregion. I have yet to
                                    test it on really complex scenes,
                                    so that will be the next thing to
                                    check. I agree on a lack of
                                    shader support in certain parts,
                                    especially compared to
                                    Arnold/Sitoa, so it is reassuring
                                    that Burtnyk and Co are so
                                    responsive :)

                                    We will likely also incorporate
                                    it to some extent when it
                                    supports vdb and volumetric
                                    rendering and see where it takes us.

                                    Morten


                                    Den 5. januar 2016 kl. 19:50
                                    skrev "Emilio Hernández"
                                    <[email protected]
                                    <mailto:[email protected]>>:

                                            Softimage and Redshift.
                                            Best marriage ever!

                                            I have 4 licenses.







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*Magnetic Dreams, Inc.
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