Nuke's 3D system is archaic (read: single-threaded), so the poor 3D performance
isn't too surprising. My instinct is that the performance differences you're
seeing are probably due to the i7's higher clock combined with scripts that
aren't optimal test cases for pure threaded rendering. There are still plenty
of nodes in Nuke that will prevent it from taking advantage of the threading
potential of modern hardware if they exist in your script.
If you're assembling render node hardware, I wouldn't worry about Nuke in your
decision-making process, as the render times for Nuke scripts will almost
always pale in comparison to those of 3D renders.
-Nathan
From: itai bachar
Sent: Monday, December 08, 2014 9:22 AM
To: Nuke user discussion
Subject: Re: [Nuke-users] (no subject)
Ive tried extensively with regular and m16,
the m16 sheds about 15-20% of render time, getting the dual xeon slightly
closer to the i7.
Another oddity, i tried displacement, with an imported obj, the i7 took 4
minutes to render the scene,
the -m16 xeon took 12 (twelve) minutes, and the regular (32 threads) took a
relaxed 15 minutes approach.
I thought maybe the imported obj is difficult for a xeon processor, so i did a
test with a built in nuke sphere,
displaced it a bit with local noise node, and the i7 took 8 minutes and the
-m16 xeon a leisurely 19 minutes.
so, it seems to me that nuke is not liking xeon processors.
thats a big shame, because i need these for 3d rendering...:-(
On Mon, Dec 8, 2014 at 5:40 PM, Randy Little <[email protected]> wrote:
yes -m 16 but try 14 or 15 and see if that frees up cpu for system calls.
Worth a try.
Randy S. Little
http://www.rslittle.com/
http://www.imdb.com/name/nm2325729/
On Mon, Dec 8, 2014 at 10:25 AM, itai bachar <[email protected]> wrote:
the machine has 2 xeon e5 2689's, 8 cores each.
so that's 16 physical cores,
should I do -m 16?
thanks
On Mon, Dec 8, 2014 at 5:16 PM, Deke Kincaid <[email protected]> wrote:
Hi itai
Is that 16 physical or virtual cores? If it's virtual then you should do
it for the physical ones -m 8.
On Monday, December 8, 2014, itai bachar <[email protected]> wrote:
Ok I checked with the xeons on 16 threads only,
now they lag behind the i7 for 10-12% only...
this is very weird.
On Mon, Dec 8, 2014 at 4:38 PM, itai bachar <[email protected]>
wrote:
sorry guys for the hebrew, that was meant for Ron,
Thanks for the tips, i'll test it with -m 16 cores and see what
happens.
On Mon, Dec 8, 2014 at 4:19 PM, itai bachar <[email protected]>
wrote:
תודה.
דה פאונדרי לא שמעו על WINDOWS?
זה די נפוץ...
לא מצליח להתחבר למיילינג ניוז הזה.
On Mon, Dec 8, 2014 at 3:18 PM, Ron Ganbar <[email protected]> wrote:
Windows in this case.
Ron Ganbar
email: [email protected]
tel: +44 (0)7968 007 309 [UK]
+972 (0)54 255 9765 [Israel]
url: http://ronganbar.wordpress.com/
On Mon, Dec 8, 2014 at 2:50 PM, Neil Scholes <[email protected]>
wrote:
Hi Ron,
I'm curious is that on linux? Thinking about new machine so
processor choice is on my mind......
Sent from my iPad
On 7 Dec 2014, at 20:07, Ron Ganbar <[email protected]> wrote:
I would expect a piece of software like Nuke to, well, push
and make use of everything available. It really feels odd to me that The
Foundry aren't taking care of this.
Thanks for the tips. I'll pass them on.
R
Ron Ganbar
email: [email protected]
tel: +44 (0)7968 007 309 [UK]
+972 (0)54 255 9765 [Israel]
url: http://ronganbar.wordpress.com/
On Sun, Dec 7, 2014 at 10:04 PM, Randy Little
<[email protected]> wrote:
Yeah or just hit x in the dag and type "set threads" see
if its using virtual cores. If it is try "set threads (physical cores)" so
"set threads 16" if thats even the case.
Randy S. Little
http://www.rslittle.com/
http://www.imdb.com/name/nm2325729/
On Sun, Dec 7, 2014 at 2:14 PM, Nathan Rusch
<[email protected]> wrote:
Nuke has (always had?) performance problems on machines
with many virtual cores. First thing I would try is running Nuke with `-m 16`
on the Xeon box.
-Nathan
From: Ron Ganbar
Sent: Sunday, December 07, 2014 6:21 AM
To: Nuke user discussion
Subject: [Nuke-users] (no subject)
Hey guys
A friend is testing a dual Xeon e5 2689 64GB gtx970 vs
his old i7 3930K 32GB gtx680, (both reading/writing to a same spec ssd running
windows).
Just so happens that the old single cpu pc is faster at
rendering, around 5%-30% than the dual xeon machine. Interactivity is also
slightly faster on the i7. (the xeon redraws a bit slower when you go to a new
frame on the timeline).
When rendering in Maya, he gets the expected 105-115%
speed gain (more than twice as fast) from the xeon's.
Seems very odd. How come? Anything we're missing here?
Ron Ganbar
email: [email protected]
tel: +44 (0)7968 007 309 [UK]
+972 (0)54 255 9765 [Israel]
url: http://ronganbar.wordpress.com/
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The Foundry
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Tel: (310) 399 4555 - Fax: (310) 450 4516
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