Introduction to Concurrency in Programming Languages

Concepts in Concurrency 37

on multicore or other tightly coupled shared memory processors that utilize

caches to increase performance in the same manner as for traditional sin-

gle processor designs, there are mechanisms within the memory subsystem

that allow caches to behave as they are expected to. When performance is a

consideration, in sequential programming the presence of caches requires the

programmer to take the memory system into account when structuring opera-

tions such as loops to ensure that the code is written to exploit the spatial and

temporal memory access locality that caches are built to optimize. A similar

consideration must be made for caches when they exist in a multiprocessing

environment in which coherence is provided to ensure ...