[quote name='MJP' timestamp='1354934346' post='5008334']
[quote name='CryZe' timestamp='1354868138' post='5008035']
A warp consists of either 16 or 32 threads grouped together.
I think you mean "32 or 64"
[/quote]
I thought a Wavefront on AMDs architecture consists of 16 execution units. Or am I wrong? (I just used warp as a general term, because I like it more
)
[/quote]
Nah there's 64 threads in a wavefront. In their latest architecture (GCN) the SIMDs are 16-wide, but they execute each instruction 4 times to complete it for the entire wavefront (so a single-cycle instruction actually takes 4 cycles to execute).