Re: [LAU]

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To: Sciss <contact@...>
Cc: <linux-audio-user@...>
Subject: Re: [LAU]
Date: Thursday, May 31, 2012 - 5:17 am

On 05/30/2012 09:21 AM, Sciss wrote:

I have an Atom N450 netbook. In practical terms, its limits for a
single task are:

* Time-stretching a clip in realtime to 50% to original
time span.

* A set with 4-5 monophonic synths, and 4-5 pure audio
tracks.

* All of the Renoise sample programs

* Most anything you can throw at Mixxx.

While it has very good audio performance -- it has significantly less
headroom than a Core2 or i-series processor (feels like a factor of 2 or 4).

Other non-audio tasks:

* Large compiles take 4-6x longer (e.g. kernel, Qt)

* Number crunching tasks are very slow. It's like the
floating point stuff is driving drunk.

* Processor has a high performance hit for inefficient
memory access (compared to Core2, i-series).

* Processor doesn't benefit as much from SIMD (SSE)
optimizations. E.g. you're lucky to get a 2x performance
boost using SIMD instructions... whereas a Core2 or i-series
will see at least a 2x performance boost.

* Most Atom devices have only 1GB RAM (2GB if you're lucky).
I've not seen an Atom device with more then 2GB.

Finally, all this experience is in 32-bit mode. I've been running in
64-bit mode recently, but haven't done much audio with it. Overall, it
feels about the same.

-gabriel
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Messages in current thread:
[LAU] , Sciss, (Wed May 30, 1:09 pm)
Re: [LAU] , Robin Gareus, (Wed May 30, 3:59 pm)
Re: [LAU] , Sciss, (Wed May 30, 4:21 pm)
Re: [LAU] , Gabriel M. Beddingfield, (Thu May 31, 5:17 am)
Re: [LAU] , Joshua D. Boyd, (Fri Jun 1, 5:39 am)
Re: [LAU] , Gabriel M. Beddingfield, (Fri Jun 1, 3:46 pm)
Re: [LAU] , Robin Gareus, (Thu May 31, 11:14 am)
Re: [LAU] , S. Massy, (Thu May 31, 3:57 pm)
Re: [LAU] , Robin Gareus, (Wed May 30, 4:58 pm)
Re: [LAU] , Leigh Dyer, (Wed May 30, 11:24 pm)
Re: [LAU] , Egor Sanin, (Wed May 30, 6:10 pm)
Re: [LAU] , Kelly Hirai, (Wed May 30, 5:56 pm)
Re: [LAU] , Egor Sanin, (Wed May 30, 3:58 pm)
Re: [LAU] , Sciss, (Wed May 30, 4:08 pm)