[x264-devel] Re: Another CPU related question

[Jelle]

Loren Merritt wrote:
> On Wed, 3 May 2006, Pedro Tumusok wrote:
> 
>> Hi,
>>
>> Since my innocent SSE3 questions spurned some replies, I tought I 
>> should ask
>> another questions.
>>
>> The Cell cpu from IBM/Sony el, the PPU is some sort of PPC and 
>> according to
>> what I read, PPC software should be recompilable and able to run on the
>> Cell. Albeit without using the SPU's, and according to different
>> presentations and concept proofs etc, the Cell with SPU is a streaming
>> device ie it can use the SPU's to offload bits of work.
>>
>> There has been some articles about it being able to decode 48 mpeg2 
>> streams
>> at once or something like that, so then to my question, do you belive it
>> would be able to show similar kind of performance in encoding?
> 
> 
> 48 mpeg2 streams? You don't need a Cell for that, unless they're 1080p 
> or something. A dvd takes 2% cpu on my Athlon64 3400, so the only thing 
> preventing me from displaying 48 of them is bandwidth to the harddrive 
> and video card.

That 2% is achieved by offloading a lot of the work to the videocard 
(which does the idct and the mc). Unless you have 48 video cards in your 
system, it will not be able to decode 48 mpeg streams.

Jelle.

> 
> --Loren Merritt
> 

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