On the EXR side, you’re almost certainly CPU-bound.
Nuke uses the default value for the Imf globalThreadCount(), which is 0. What
this means is that there are no worker threads allocated by the Imf library for
EXR decompression, and thus each exrReader must perform its file I/O and
decompression on a single thread.
DPX should cook though.
-Nathan
From: Michael Garrett
Sent: Wednesday, March 27, 2013 9:27 PM
To: Nuke user discussion
Subject: Re: [Nuke-users] FusionI/O and Nuke
>Setting your disk cache and your local cache to the card makes nuke very fast.
>Mostly dpx files.
I've done just that, but it hasn't made any difference over using a 10K raptor
drive, at least for local caching. I'll monitor how we go with the disk cache.
We're using Zip1 exr's too, so they need to be decompressed on the cpu before
displaying in the viewer.
On 27 March 2013 23:52, Michael Bogen <[email protected]> wrote:
Setting your disk cache and your local cache to the card makes nuke very
fast. Mostly dpx files. Thanks Deke for the tip about the Exr.
michaelb
mbfx.me
On Mar 27, 2013, at 7:16 PM, Michael Garrett <[email protected]> wrote:
Hi Deke,
That all makes sense, I figured I should try Cineon/DPX out of curiosity
for the exact reasons you state, although it's not part of our pipeline. It'll
be interesting to compare notes about the card performance as a whole, though.
I wonder if it's possible to at some point get exr's to decompress on the
gpu?
Michael
On 27 March 2013 18:47, Deke Kincaid <[email protected]> wrote:
Hi Michael
I'm actually testing this right now as Fusionio just gave us a bunch of
them. Early tests reveal that with dpx it's awesome but with openexr zip
compressed file it it is spending more time with compression, not sure if it is
cpu bound or what(needs more study but its slower). Openexr uncompressed files
though are considerably superfast but of course the issue is that it is 18 meg
a frame. These are single layer rgba exr files.
-----
Deke Kincaid
Creative Specialist
The Foundry
Mobile: (310) 883 4313
Tel: (310) 399 4555 - Fax: (310) 450 4516
The Foundry Visionmongers Ltd.
Registered in England and Wales No: 4642027
On Wed, Mar 27, 2013 at 3:26 PM, Michael Garrett <[email protected]>
wrote:
I'm evaluating one of these at the moment and am interested to know if
others have got it working with Nuke nicely, meaning, have you been able to
really utilise the insane bandwidth of this card to massively accelerate any
part of your day to day compositing?
So far, I've found it has no benefit when localising all Reads in a
somewhat heavy comp, or even playing back a sequence of exr's or deep files,
compared to localised sequences on a 10K Raptor drive also in my workstation -
hopefully I'm missing something big though, this is day one after all.
There may be real tangible benefits to putting the Nuke cache on it
though - I'll see how it goes.
I'm also guessing that as gpu processing becomes more prevalent in Nuke
that we will see a real speed advantage handing data from a card like this
straight to the gpu.
Thanks,
Michael
_______________________________________________
Nuke-users mailing list
[email protected], http://forums.thefoundry.co.uk/
http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
_______________________________________________
Nuke-users mailing list
[email protected], http://forums.thefoundry.co.uk/
http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
_______________________________________________
Nuke-users mailing list
[email protected], http://forums.thefoundry.co.uk/
http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
_______________________________________________
Nuke-users mailing list
[email protected], http://forums.thefoundry.co.uk/
http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
--------------------------------------------------------------------------------
_______________________________________________
Nuke-users mailing list
[email protected], http://forums.thefoundry.co.uk/
http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users_______________________________________________
Nuke-users mailing list
[email protected], http://forums.thefoundry.co.uk/
http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
