[mpich-devel] P states and MPI

William Gropp wgropp at illinois.edu
Fri Jan 17 07:34:24 CST 2014

There has been some work on this for parallel programs; Wu Feng at Virginia Tech has done some, for example.  I don't recall seeing any work that used the profiling interface.  Some of the issues raised, especially the required privs, mean that this is only available for experiments, not production, until that changes.  Also, its sometimes possible to make predictions about wait times based on previous iterations; that could be used to refine such control.


William Gropp
Director, Parallel Computing Institute
Deputy Director for Research
Institute for Advanced Computing Applications and Technologies
Thomas M. Siebel Chair in Computer Science
University of Illinois Urbana-Champaign

On Jan 16, 2014, at 9:36 PM, Jeff Hammond wrote:

> I was impressed by
> http://www.hpcadvisorycouncil.com/events/2013/Spain-Workshop/pdf/5_Dell.pdf
> / http://www.bsc.es/sites/default/files/public/mare_nostrum/2013hpcac-05.pdf.
> I wonder if anyone else has seen this, done anything similar, is
> interested in doing something similar, etc.  I can imagine that a more
> integrated implementation has some performance advantages, albeit at
> much greater maintenance cost.
> Thanks,
> Jeff
> -- 
> Jeff Hammond
> jeff.science at gmail.com

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