Author: Larry Griffiths
Date: 05:57:23 01/24/01
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On January 24, 2001 at 05:32:09, Dan Andersson wrote: >I assume it depends on the program. When trying MMX I got a significant >slowdown, over 50% slower in fact. > >Regards Dan Andersson I got bad performance hits with MMX until I discovered that the data has to be aligned on quadword boundrys. I would change code and get different run times. I found that inserting code was shifting my data across qword boundrys and this could make it take 4 times longer to execute. Larry.
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