13 Apr
2013
13 Apr
'13
11:05 a.m.
AMD dual octo-core (true eight physical cores - not bragging, just clarifying) at 4.0 GHz
and using 15 cores under Win7 x64 nets me ~8 to 9ish fps consistently. I keep considering
making my notebooks (two quad-cores and a dual-core) join in, but my single machine does
okay.
As for HT or not HT, despite the fact that they're a single, dual or quad physical
core processor, even with the overhead subtracted for treating it as a dual, quad or octo
virtual core processor still adds 30% performance, which though not a substitution for
physical cores, are a welcome thing, I imagine.
Leslie
-----Original Message-----
From: Carsten Kurz <audiovisual(a)t-online.de>
Sender: dvdomatic-bounces(a)carlh.net
Date: Sat, 13 Apr 2013 11:51:05
To: <dvdomatic(a)carlh.net>
Subject: Re: [DVD-o-matic] faster encoding with GPU?
Am 13.04.2013 um 08:42 schrieb Adam Klotblixt:
My quad core i5-3550(a)3.3GHz converting a dvd-clip with
no extra filters clocks in at 3-3.5fps. LinuxMint 64-bit.
Adding my HTPC as an extra encoding server converts the same clip at 5-6fps. It runs
adual core i3-2100(a)3.1GHz with HT, so 4 threads. Win7 64-bit.
This seems to suggest that HT helps with DVD-o-matic. But I'm not certain. Is it
better to run your CPU with HT off and use only 2 threads, vs having HT on running 4
threads. My gcc-compiles at work do not care for HT.
On my 2310 dual core notebook (DVD-o-matic 64-bit) I can only get into full CPU load mode
when I dial in 4 threads in DVD-o-matic. When I choose 2 threads, I get all 4 logical CPUs
loaded, but only to 50% aggregated load at around 0.9frames/s.
When I choose 4 threads, all 4 logical CPUs are loaded fully, aggregated 100%, and it goes
up to 1.4frames/s peak.
3 is probably most economical at slightly below 80% and 1.2frames/s, and there is some
headroom to have other things running on the machine.
As I will be doing more and longer encodings in the future, I'm in the market for a
desktop machine with some more cores and cpu cycles/s. I might have some DualCore desktops
sitting around to aid.
Would love to hear what others are getting - someone with AMDs?
- Carsten
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