i have read the article about intels HyperThreading. very intresting indid.
however it seems to me that there maybe a problem utilizing HyperThreading on current P4 which:
1. Decoder - i've heard that the x86 Decoder on the P4 isnt that good... being able to decode in a 4-1-1 format (4 instractions two microps) if so... it might not utiliez the full power of the 7 excution units...
2. instraction Cache - as i understand, evrything decoded by the p4 decoder has to get registerd in the limted (12k ?) instraction cache before it goes on through the rest of the pipline... wouldnt that be another problem dealing with extensive amount of instraction?
hmmm... should this post be at HT? dont know...
I hope ill get a few answers insights or stuff...
Thank you.
however it seems to me that there maybe a problem utilizing HyperThreading on current P4 which:
1. Decoder - i've heard that the x86 Decoder on the P4 isnt that good... being able to decode in a 4-1-1 format (4 instractions two microps) if so... it might not utiliez the full power of the 7 excution units...
2. instraction Cache - as i understand, evrything decoded by the p4 decoder has to get registerd in the limted (12k ?) instraction cache before it goes on through the rest of the pipline... wouldnt that be another problem dealing with extensive amount of instraction?
hmmm... should this post be at HT? dont know...
I hope ill get a few answers insights or stuff...
Thank you.
