User:Rdm: Difference between revisions
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In other words, when working with a gigabyte of memory on that machine, a single instruction with a cache miss might cost the time of almost 1100 instructions to (in extreme cases) almost 8800 instructions. |
In other words, when working with a gigabyte of memory on that machine, a single instruction with a cache miss might cost the time of almost 1100 instructions to (in extreme cases) almost 8800 instructions. |
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Of course the above simplifications focused purely on a single cpu architecture |
Of course, the above simplifications focused purely on a single cpu architecture and ignored variations in memory architecture. |
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And there are other issues -- for example, when two different cores are accessing the same memory, that tends to introduce cache management conflicts which slow things down. |
And there are other issues -- for example, when two different cores are accessing the same memory, that tends to introduce cache management conflicts which slow things down. |
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