[petsc-dev] Generality of VecScatter

[Jed Brown]

On Tue, Nov 29, 2011 at 14:09, Dmitry Karpeev <karpeev at mcs.anl.gov> wrote:

> I wouldn't consider that stackoverflow post to be authoritative, but there
>> is a large body of literature on lock-free synchronization.
>>
>
> Could you point me to some of it?
>

These are not bad places to start

https://www.google.com/search?q=lock-free
http://scholar.google.com/scholar?q=lock-free


>
>> Unless there is resource contention, spinning is always the lowest
>> latency choice. All multi-threaded cores have some sort of pause
>> instruction because it's necessary to make that design useful. For this
>> purpose, we should just spin.
>>
>> Note that with sequential consistency,
>>
>
> What do you mean by "sequential consistency"? If we did serialize the
> threads before waking them up?
>

Sequential consistency has to do with the memory model.

http://en.wikipedia.org/wiki/Sequential_consistency
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