[Beowulf] single machine with 500 GB of RAM

Vincent Diepeveen diep at xs4all.nl
Wed Jan 9 17:06:02 PST 2013


On Jan 10, 2013, at 1:47 AM, Ellis H. Wilson III wrote:
> [snip]

> My attention to them has revolved more around the latency issues that
> arise when you add a HW raid controller and the SATA protocol between
> the CPU and the SSD.  This is exacerbated if the access patterns do  
> not
> remain completely random but converge over the lifetime of the run  
> -- in
> that case you may run into the accesses localizing onto a single  
> SSD in
> the RAID array and bottlenecking performance towards the tail-end  
> of the
> execution.

Ellis, ever heard of striping?



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