<peterz> balbir_: think of it as a heisenberg uncertainty rule, the larger your parallel machine, the less acurate you can report on a global state
The heisenberg law
March 17th, 2009 · 2 Comments · Uncategorized
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<peterz> balbir_: think of it as a heisenberg uncertainty rule, the larger your parallel machine, the less acurate you can report on a global state
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1 Gautham R Shenoy // Mar 17, 2009 at 5:17 pm
If you have a large parallel machine, you gotta be extremely stupid to use it to serve a purpose that requires keeping accurate track of the global state.
But then what about a single OS image that runs on top of it ?? Food for thought, I guess ?!
2 theG // Mar 17, 2009 at 9:27 pm
well, one single OS image reduces the need to IPC (or maybe IOC in this case), so probably lower overhead. Also, multiple images will require way better partitioning of the dataset for parallelism. Intuitively I feel that a single OS image does not require that high a level of partitioning that multiple images will. But I can be wrong
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