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About the Usefullness: Optimized SETI@apps for AMD64 Opteron with SSE4a

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Jason G:
I'd suggest a 'current generation' OS has little direct use for detection or implementation of anything beyond SSE2, given that the primary cacheability & streaming instructions useful in drivers etc. are SSE2 and below.  SSE3 unaligned loads are great, but since the OS must support SSE2 limited chips anyway, then that instruction becomes redundant, since the datasets would already be carefully aligned in things like drivers and runtime libraries. 

For the bulk of  SSE3 and above, the instructions become more application targetted and vendor specific, which applies to things like codecs and compression software (We love horizontal math too!) rather than OS function, so the necessity isn't really there for any detection, implementation or support at OS level.  Really, the same probably applies to Boinc too, since it's just a coarser grained version of the same thing  :o ... Only better  :P

paxv:
So noted. Thank U all 4 Ur time

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