On Sat, 12 Feb 2005, Amaury Jacquot wrote:
> >> The Opteron-250 with its 2.4GHz clock is about *2X* faster
> >> than the
> >> 2GHz G5/PPC system I have! What took 34 hours to run on the G5
> >> (or the
>
> is that G5 PPC dual processor or not ?
Of course. I haven't (with the exception of the notebooks) had a
single cpu system since 1998.
The final total elapsed time of the two encoding runs:
dual G5: 34hrs 7min 1.3 frames/sec
dual Opteron: 15hrs 46 min 2.80 frames/sec
> an opteron 250 processor goes for about 800 €, and an appropriate
> motherboard is about 500 €
Cpu is $825 (then you need a good fan/heatsink - about $25).
The motherboard I selected was only $259 and would fit in a standard
ATX case.
> if you factor in some ram, and a power supply, this comes out at a cool
> 3000 € (not including case or disks) which is pretty inexpensive
I did end up getting a EPS12V (24+8pin) powersupply but that was
just $70.
> is y4mdenoise using multithreaded design ?
Yes - the chroma planes are denoised in parallel with the luma plane.
It helps, but the chroma planes are quite small so the speedup is
modest.
> if yes, you may want to hack it so that it locks each thread to a
> particular processor, taking into account the data transfers between
I think the benefits of pinning are over rated - and it's not portable
(different systems either do it differently or don't support it).
Probably not worth a lot of effort - but if someone else want to do it
I'll give it a run and see what happens :)
Cheers,
Steven Schultz
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