Re: [CFT] faster athlon/duron memory copy implementation

Robert Love (rml@tech9.net)
24 Oct 2002 16:13:50 -0400


On Thu, 2002-10-24 at 16:09, Ed Sweetman wrote:

> I seem to be seeing compiler optimizations come into play with the
> numbers and not any mention of them that i've seen has been talked
> about. That could be causing any discrepencies with predicted values. So
> not only would we have to look at algorithms, but also the compilers and
> what optimizations we plan on using them with. Some do better on
> certain compilers+flags than others. It's a mixmatch that seems to only
> get complicated the more realistic you make it.

The majority of the program is inline assembly so I do not think
compiler is playing a huge role here.

Regardless, the numbers are all pretty uniform in saying the new no
prefetch method is superior so its a mute point.

Robert Love

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