Relaxed memory consistency
Web为获得好的性能，我们可以引入放松内存一致性模型(relaxed memory consistency models)，这些模型主要通过两种方式优化程序（读写）： 放松对程序次序的要求：这种放松与此前所述的“在无缓存的体系结构中采用的优化”类似， 仅适用于 对不同地址的操作对(opeartion pairs)间使用。 WebOct 19, 2000 · To hide the underlying relaxed memory consistency model and to guarantee sequential consistency, our algorithm inserts fence instructions by identifying memory …
Relaxed memory consistency
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WebJan 1, 2011 · The authors present a data-race-free-1, shared-memory model that unifies four earlier models: weak ordering, release consistency (with sequentially consistent special … WebThis memory consistency model relaxed the write-read constraint. The write does not need to be finished before read to a given location takes place. More intuitively, this model …
Web// memory locations accessed atomically are never accessed non-atomically (tsan // should help with this). // // TODO(jfb) Modify the atomicops.h API and user code to declare atomic // locations as truly atomic. See the static_assert below. // // Of note in this implementation: // * All NoBarrier variants are implemented as relaxed. WebA continuum of consistency models Sequential consistency is one data point on what should be required of a programming model. Let us introduce a way of diagramming …
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