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A comment on Supercomputers: Obama orders world's fastest computer. Parent comment

Re:Supercomputers: Obama orders world's fastest computer by markhahn on Thursday July 30, 2015 @10:38PM (#9979634)
none of this is news - what you're describing is really just strong scaling. and sure, most systems already have subsets of nodes set aside for post-simulation cleanup.
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Re:Supercomputers: Obama orders world's fastest computer by dekhn on Friday July 31, 2015 @09:31AM (#9981603)
Here is the news: the Jupiter paper is now published. http://conferences.sigcomm.org/sigcomm/2015/pdf/papers/p183....

I'm not just describing strong scaling. I'm describing a cost-effective way to achieve it; that's what really matters.

Why have subsets of nodes for post-simulation cleanup? Why not just run that cleanup on the same nodes you used for simulation? Or other general nodes? Otherwise, you've got two sets of nodes which are used at lower utilization than they would normally be.

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