[gmpi] Re: Topic 7: Audio packaging
- From: "Vincent Burel" <vincent.burel@xxxxxxxxxx>
- To: <gmpi@xxxxxxxxxxxxx>
- Date: Tue, 3 Jun 2003 15:40:18 +0200
----- Original Message -----
From: <RonKuper@xxxxxxxxxxxx>
To: <gmpi@xxxxxxxxxxxxx>
Sent: Tuesday, June 03, 2003 2:40 PM
Subject: [gmpi] Re: Topic 7: Audio packaging
> for exemple : "on a average montage 24 tracks , 150 clips, we have
inserted
> 24 EQ+Compressor on console and other 40 special Fx on some clips. With
the
> "IsZero" opimization we have been able to insert 10 other plug-ins without
> getting trouble. But we finnally get trouble after moving 20 clips on the
> timeline". So Why Ron does not said it !? just because he didn't measure
> something in real situation.
> <<<
>
> Are you calling me a liar?
I don't know you enough to say that. but i can say that you don't give good
argument and nobody bother you or ask you for further information.
and you confirm below that i'm saying , you simply did not a test in a
situation which concerns plug-ins.
> First of all, the usage case you described is not what I was benchmarking
> when I saw performance bottlenecks. My usage case was simply a bunch of
> audio tracks, with a the same amount of "blank space" between audio clips
as
> you would expect in any real-world project that had been edited a while.
No
> effects were present in ths project; my goal was to simply benchmark the
> performance of our mixing code.
> In this test case, running under VTune, I saw performance "hotspots" in
the
> zero fill code. In other words, we were zerofilling excessively, and it
was
> showing up in the CPU overhead.
zero fill code is may be the fastest operation we can do , so i remind me
what you could requiere for other kind of more complicated operation ! :-)
> An IsZero optimization will not give the kinds of gains as in your
example.
> But it will give some gains, and it is optional, and since this discussion
> is about *requirements*, my stake in the ground is, "I require this."
hum hum, i'm still saying that "this" does not concern plug-in, and is
usefull only for some few host , which certaineley aren't stucturally
optimized.
Vincent Burel
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