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In-Reply-To: <list-5278476@media-motion.tv>
References: <list-5278476@media-motion.tv>
Date: Fri, 8 Nov 2013 01:47:37 -0500
Message-ID: <CADKB15ZmR=YSp7aSp1xtkhy=ijovaX5yZD8v1+qiBMuKLA-aMw@mail.gmail.com>
Subject: Re: [AE] Multiprocessing and RAM previews?
From: Greg Balint <delrazoraelist@gmail.com>
To: After Effects Mail List <AE-List@media-motion.tv>
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This happens depending on how large the project is. Basically AE needs to
save the project and load it up in the render processes.  If you have a
simple project that takes 1 second to load, then it'll take maybe 10
seconds to load everything else. If your project takes 1 minute to save and
another minute to load then yeah, it's gonna be a while.

Also depends on the amount you need to preview. If I'm previewing 30-45
seconds of a heavy comp, then the 20 seconds it takes to spool up doesn't
matter to me because it'll save me time on a long render.  But if you are
only previewing a short timeframe it may be best to turn it off.

Fyi, AE CC has a toggle  option to not use MP during RAM previews.

///Greg Balint
//Art Director / Motion Graphics Designer
/321.514.4839
delRAZOR.com/

On Nov 8, 2013 1:40 AM, "Michael Murphy" <murphy@lasercade.com> wrote:

> Hi everyone,
>
> I had a question to you all regarding your use of multiprocessing in AE
> CS6+.
>
> I've used AE on about 4 different machines in the last few years, with
> both flavors of OS, all with either 16 or 32 gigs of ram. I've configured
> my multiprocessing prefs, according to Todd Kopriva's Adobe videos and
> posts (i.e. making sure I'm not starving the system and other apps, giving
> 2-3 gigs of ram per cpu etc.).
>
> What I've found on all these systems is that using multiprocessing during
> ram previews actually seems to take longer than without. There's a variable
> (but what always feels like a very long) wait as the background processes
> fire up that seems to nullify the speed benefits once the extra cpu's do
> kick in. I've also found that the disk cache seems a bit more flakey with
> multiprocessing enabled (i.e. doesn't seem to cache all the time).
>
> I have invariably ended up just turning multiprocessing off and only using
> it for final renders (and usually not even then as I often render over
> night when render time isn't an issue).
>
> So my question is, has everyone else had a similar experience? I haven't
> seen anyone mention it on the list, so I've always thought It might be a
> anomaly with my configuration, but I have a new computer now, running Win
> 8.1 pro 64bit and it's the same situation as my 2012 macbook pro and older
> systems.
>
> Thanks for your input!
>
> mm
>

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<p dir=3D"ltr">This happens depending on how large the project is. Basicall=
y AE needs to save the project and load it up in the render processes.=A0 I=
f you have a simple project that takes 1 second to load, then it&#39;ll tak=
e maybe 10 seconds to load everything else. If your project takes 1 minute =
to save and another minute to load then yeah, it&#39;s gonna be a while. </=
p>

<p dir=3D"ltr">Also depends on the amount you need to preview. If I&#39;m p=
reviewing 30-45 seconds of a heavy comp, then the 20 seconds it takes to sp=
ool up doesn&#39;t matter to me because it&#39;ll save me time on a long re=
nder.=A0 But if you are only previewing a short timeframe it may be best to=
 turn it off.</p>

<p dir=3D"ltr">Fyi, AE CC has a toggle=A0 option to not use MP during RAM p=
reviews. </p>
<p dir=3D"ltr">///Greg Balint<br>
//Art Director / Motion Graphics Designer<br>
/321.514.4839<br>
delRAZOR.com/<br>
=A0=A0=A0 </p>
<div class=3D"gmail_quote">On Nov 8, 2013 1:40 AM, &quot;Michael Murphy&quo=
t; &lt;<a href=3D"mailto:murphy@lasercade.com">murphy@lasercade.com</a>&gt;=
 wrote:<br type=3D"attribution"><blockquote class=3D"gmail_quote" style=3D"=
margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir=3D"ltr">Hi everyone,<div><br></div><div>I had a question to you al=
l regarding your use of multiprocessing in AE CS6+.</div><div><br></div><di=
v>I&#39;ve used AE on about 4 different machines in the last few years, wit=
h both flavors of OS, all with either 16 or 32 gigs of ram. I&#39;ve config=
ured my multiprocessing prefs, according to Todd Kopriva&#39;s Adobe videos=
 and posts (i.e. making sure I&#39;m not starving the system and other apps=
, giving 2-3 gigs of ram per cpu etc.).</div>

<div><br></div><div>What I&#39;ve found on all these systems is that using =
multiprocessing during ram previews actually seems to take longer than with=
out. There&#39;s a variable (but what always feels like a very long) wait a=
s the background processes fire up that seems to nullify the speed benefits=
 once the extra cpu&#39;s do kick in. I&#39;ve also found that the disk cac=
he seems a bit more flakey with multiprocessing enabled (i.e. doesn&#39;t s=
eem to cache all the time).</div>

<div><br></div><div>I have invariably ended up just turning multiprocessing=
 off and only using it for final renders (and usually not even then as I of=
ten render over night when render time isn&#39;t an issue).</div><div>
<br>
</div><div>So my question is, has everyone else had a similar experience? I=
 haven&#39;t seen anyone mention it on the list, so I&#39;ve always thought=
 It might be a anomaly with my configuration, but I have a new computer now=
, running Win 8.1 pro 64bit and it&#39;s the same situation as my 2012 macb=
ook pro and older systems.</div>

<div><br></div><div>Thanks for your input!</div><div><br></div><div>mm</div=
></div>
</blockquote></div>

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