16 Oct
2003
16 Oct
'03
2:24 p.m.
Thursday 16 October 2003 12.36 skrev Benno Senoner:
Robert Jonsson wrote:
The x86 has always been short of registers, which is perhaps the primary
weapon the compiler can use to optimize code. Athlon64 remedies this by
doubling the size (32->64) and the amount (8->16) of all integer registers.
SSE also have double the amount of registers which (i think) benefits
floating point work (if the compiler supports it).
But... guessing is but all we can do (i guess), until gcc (or similar?)
supports this processor well...unless they already do so(?)...
/Robert
Since we are in a world where 64bit native is only
a recompile away
(tm)... Anyone have any insights on the possible performance improvements
with that perspective?
I've heard the Athlon64 has lots of registers, lots of cache, more
pipelines and, well, it's 64bit, it sure sounds as if it would make one
hell of a difference, right?
/Robert
I'm curious too about the performance boost we can achieve by
recompiling HD Recording and software sampler/synths
as 64bit.
Any estimates ? (eg the same app delivers 50% more performance when run
in 64bit mode) I mean: the Athlon 64 should provide higher memory
bandwidth which is beneficial anyway
but I'm curious if synthesis/processing is sped up too (by larger
caches, 64bit cache bus etc).