[Asterisk-Dev] Echo cancellation on GPU

[lconroy]

PCI-E (as used in PEG cards) was supposed to allow just that kind of - 
 >bidirectional<- bandwidth.
It's one reason why some folk have experimented with SLI/Crossfire  
configurations without the separate cross-card connector - in that  
case, it flows into and back out via the PCI-E.

I do wonder if this work should wait until the manufacturers have  
actually implemented the GPGPU concept for real (i.e. outside a lab  
and into some firmware).

I also think that you are a brave bunch of b*st*rds to even think of  
developing your own (efficient) drivers for this - I'm not sure if  
the NVidia or ATI Linux drivers have enough (open) source available  
to give you somewhere to start.

all the best,
   Lawrence

On 25 Sep 2005, at 23:34, Richard Scobie wrote:
> As a contributor to the earlier discussion, another significant  
> problem with using GPU's is getting the processed result back  
> rapidly from the card - the drivers are (maybe were) poorly  
> optimised for it.
>
> This situation may now be changing with the more recently released  
> (6000 and 7000) series nVidia GPUs. I have nothing to support this  
> other than a comment on the box of a PCIe Quadro 540 I recently  
> installed, which states in respect of its PCIe interface "This new  
> bus doubles the bandwidth of AGP 8X delivering over 4 GB/sec. in  
> both upstream and downstream data transfers."
>
> Whether this is delivered in the real world is another story.
>
> Regards,
>
> Richard
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