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. Bill 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 [email protected]