[Beowulf] SSD caching for parallel filesystems

Vincent Diepeveen diep at xs4all.nl
Mon Feb 11 16:18:34 PST 2013


On Feb 12, 2013, at 12:39 AM, Joe Landman wrote:
>
> If you know what you are doing, 3GB/s is so ... several years ago.  
> c.f.
> http://scalability.org/?p=3157
>

If you scroll back Joe,

The 3GB/s figure is what they posted they were happy to reach with a  
SSD.

That's why i kept using it.

> Wait, you want faster?  How about this? http://scalability.org/?p=5779
>

That's for the high frequency traders who need fastest possible  
latencies to SSD :)

Let me not ask after price there as we can buy a house from that i  
bet :)


>>
>> What we know for sure is that the SSD array is going to be really
>> expensive.
>
> So far, in this post, these are the first words that I would have to
> agree with, for various values of the word "really".
>
>>
>> In short SSD's are only interesting for latency and caching.
>
> ... and back to absolutes.  Wrong ones, but absolutes.
>
>
> So at some point, when its all ok to talk publicly about what we are
> doing, you'll see a pretty good refutation of, well, almost everything
> that was said in this post.
>
> And yes, my company is very self respecting.
>
>
>
> -- 
> Joseph Landman, Ph.D
> Founder and CEO
> Scalable Informatics, Inc.
> email: landman at scalableinformatics.com
> web  : http://scalableinformatics.com
>         http://scalableinformatics.com/sicluster
> phone: +1 734 786 8423 x121
> fax  : +1 866 888 3112
> cell : +1 734 612 4615
>
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