You could consider these "thread-local" copies of variables to be similar to a cache, helping the thread avoid checking main memory each time it needs to access the variable's value.

您可以将变量的这些“线程局部”副本看作是与缓存类似，在每次线程需要访问变量的值时帮助它避免检查主存储器。

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The SPEs access main storage with direct memory access (DMA) commands that move data and instructions between main storage and a private local memory, called a local store or local storage (LS).

SPE 用直接内存访问（DMA）命令访问主存储器，可以在主存储器与称为本地库或本地存储（LS）的私有本地内存之间移动数据和指令。

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For example, data structures and access methods are specifically optimized to work on data that is located in main memory.

比如，数据结构和访问方法专门针对位于主内存中的数据进行了优化。

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B It swaps this one and these two, A and B, but it has no access to main's memory.

它交换了这个和这两个变量，A和，但是它没有介入到main的内存中。

哈佛公开课 - 计算机科学课程节选

When your computer boots up, it spends an interminable amount of time heaving some 30 million lines of operating code from the hard drive onto its main memory, DRAM (dynamic random access memory).

FORBES: Total Recall