Many Threads = More Parallelism
When enabled-threads
are numerous, the processors keep busy; “compute bound”
•More
parallelism exists than can be used by processors
•Communication
subsystem operates “below saturation”
Load: n+1
Load: n
Load: n+2
Comp: n+1
Store: n+1
Store: n
Store: n-1
Store: n-2
Comp: n+2
Comp: n
Comp: n+1
MM is example: 2m values imply m2 operations