Abstract
Because multiprocessors implement sophisticated memory structures in order to
enhance performance, processes can have inconsistent views of memory which
may result in unexpected program outcomes. A memory consistency model is a
set of guarantees that describes constraints on the outcome of sequences of
interleaved and simultaneous operations in a multiprocessor. In this paper,
we present a unifying framework to describe, understand, and compare memory
consistency models. The framework is used to redefine and compare several
widely used memory consistency models.
Notes
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