Re: fecpp C++ forward error correction library

[Loic Dachary <loic@dachary.org>]

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On 04/30/2013 02:08 AM, Christopher LILJENSTOLPE wrote:
> Supposedly, on 2013-Apr-22, at 06.19 PDT(-0700), someone claiming to be Loic Dachary scribed:
> 
>> Hi Christopher,
>>
>> Jack Lloyd is the author of fecpp ( http://www.randombit.net/code/fecpp/ ) and he tells me someone sent him a new SIMD approach a few weeks ago. I'm not sure what SIMD means yet, but I'll figure it out ;-). I tend to favor fecpp because it is more self contained and may be easier to embed than https://pypi.python.org/pypi/zfec
> 
> I'll defer, provided that we don't incur a performance penalty (which is one of the negatives in sharding).  As far as SIMD: Single Instruction Multiple Data.  Basically, if you think of a tiled processor (like a GPU), then you set all the tiles to do the same instruction, and stream different data to each tile.  As opposed to MIMD, where each tile runs a different instruction on different data.   You don't need parallel processing CPUs to make use of SIMD, but you can get them going screamingly fast if you do…

Hi Christopher,

Thanks for explaining :-) Although it seems disk / network I/O are the bottleneck, it's good to be able to reduce the processing footprint to a minimum.

Cheers

> 
> 	Christopher
> 
>>
>> Cheers
>>
>> -- 
>> Loïc Dachary, Artisan Logiciel Libre
> 
> 
> --
> 李柯睿
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-- 
Loïc Dachary, Artisan Logiciel Libre



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