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Re: [Discuss-gnuradio] MP scheduler performance scaling
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From: |
Eric Blossom |
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Subject: |
Re: [Discuss-gnuradio] MP scheduler performance scaling |
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Date: |
Tue, 22 Jul 2008 11:03:31 -0700 |
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User-agent: |
Mutt/1.5.17 (2007-11-01) |
On Sat, Jul 19, 2008 at 09:08:39PM -0700, Eric Blossom wrote:
>
> See http://gnuradio.org/trac/wiki/MPSchedulerPerformance for pretty
> pictures and links to the code and raw data.
>
I've added graphs showing Altivec performance.
The MP scaling on the PS3 is _much_ better with Altivec than without
it. I suspect it has something to with the interaction between the
dual-thread dispatch and the VSU pipeline. (I'd always thought that
SMT / hyper-threading was a crock, but at least in this one case it
pays off).
Eric