Author: Russell Reagan
Date: 16:15:09 02/12/04
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On February 12, 2004 at 19:03:34, Andrew Wagner wrote: > >>Generally the data that is the same size as the cpu registers is the most >>efficient. So on a 32-bit machine, 32-bit variables should be the fastest to >>work with. However, that is not the only factor. You have to take into account >>things like the cache. Usually working with 8-bit data on a 32-bit cpu might be >>a little slower than working with 32-bit data, but if using 8-bit data means >>that all of your data and code fits into the cache, then using 8-bit data can be >>significantly faster. > >Well, here on my laptop i'm working with a celeron 2.4 gHz cpu, which i'm pretty >sure doesn't have a cache. So I may as well use integers, i suppose. My desktop >has a full P4 though, so I may have to investigate some way to definet it >differently depending on the computer i'm on. I may be wrong (or this may have changed in recent years), but I think the Celeron lacks the L2 cache, but still has the L1 cache. The L1 cache is usually pretty small though, especially on these kind of Intel chips.
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