main memory

基本解釋

For about 20 years now, CPUs have increased exponentially in speed, while main memory has weakly linearly increased in speed.
近 20 年來，CPU 的速度呈指數(shù)式快速增長，而主內(nèi)存的增長慢得多，大致是直線式的。
If the data or instruction is not present in the cache, or if the cache line is invalidated, the CPU updates its cache by reading the data from the main memory.
如果數(shù)據(jù)或指令沒有出現(xiàn)在高速緩存中，或者如果高速緩存線路無效的時候，CPU 通過從主存儲器中讀數(shù)據(jù)來更新它的高速緩存。
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.
您可以將變量的這些 “線程局部” 副本看作是與緩存類似，在每次線程需要訪問變量的值時幫助它避免檢查主存儲器。

B It swaps this one and these two, A and B, but it has no access to main's memory.
它交換了這個和這兩個變量，A和，但是它沒有介入到main的內(nèi)存中。
哈佛公開課 - 計算機科學課程節(jié)選
foo Well, if main has any local variables X or Y or temp or foo or bar, or whatever the case may be, those variables come next in memory.
好的，如果main函數(shù)有本地的變量X或Y或temp或,或bar，或者諸如此類的例子，這些變量在內(nèi)存中緊隨其后。
哈佛公開課 - 計算機科學課程節(jié)選
So down below is generally where main's memory goes.
在底下，通常是main函數(shù)使用的內(nèi)存。
哈佛公開課 - 計算機科學課程節(jié)選

It had no mouse or hard drive, 512K of main memory and two floppy drives.
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內(nèi)存
At the same time, it takes less main memory cost by classification tree.3.
同時采用分類樹存儲數(shù)據(jù)也減少了內(nèi)存的開銷。
主存儲器
主存
主記憶體