[Beowulf] bring back 2012?

[Prentice Bisbal]

I'm not going to dispute your claims, but I think you're probably a 
statistical anomaly in this regard. I'm guessing your code isn't that 
old, so it was built using current 'best practices' for parallelization 
(loop independence, data parallelism, overlapping communication and 
computation, etc) for the get-go, or was at least kept 'modern'  which 
made it easy for the compilers to optimize for the Phis.

Can you comment on this?

Prentice

On 08/18/2016 09:28 PM, Stu Midgley wrote:
> we get EXCELLENT performance from the phi's... just look at our 
> marketing with Intel.
>
> The 72XX series are also superb.
>
> On Fri, Aug 19, 2016 at 7:41 AM, Christopher Samuel 
> <samuel at unimelb.edu.au <mailto:samuel at unimelb.edu.au>> wrote:
>
>     On 18/08/16 00:10, Prentice Bisbal wrote:
>
>     > I wouldn't be so glad. You're still going to have to rewrite
>     your code
>     > as mentioned above to get any meaningful performance.
>
>     To be fair to Stu though he did post back in 2013 that he got good
>     performance improvements on his codes on Xeon Phi for little initial
>     effort, so that's why they're so attractive to him.
>
>     http://www.beowulf.org/pipermail/beowulf/2013-February/030963.html
>     <http://www.beowulf.org/pipermail/beowulf/2013-February/030963.html>
>
>     http://www.beowulf.org/pipermail/beowulf/2013-February/030971.html
>     <http://www.beowulf.org/pipermail/beowulf/2013-February/030971.html>
>
>     To us though they've proved not that useful, we can only run them
>     in accelerator mode (due to external constraints) and so we've had
>     virtually 0 uptake. :-(
>
>     All the best,
>     Chris
>     --
>      Christopher Samuel        Senior Systems Administrator
>      VLSCI - Victorian Life Sciences Computation Initiative
>      Email: samuel at unimelb.edu.au <mailto:samuel at unimelb.edu.au>
>     Phone: +61 (0)3 903 55545 <tel:%2B61%20%280%293%20903%2055545>
>     http://www.vlsci.org.au/ http://twitter.com/vlsci
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>
>
>
> -- 
> Dr Stuart Midgley
> sdm900 at sdm900.com <mailto:sdm900 at sdm900.com>
>
>
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