performance,equation,computer-architecture,parallelism-amdahl

Suppose current execution time is 100 seconds. Desired speedup is 6/5, so that means the new time over the old time should be 5/6, a reduction of 16.67% or 16.67 seconds. (That's all Amdahl's law is!) You know that 20 seconds are spent in memory access, 50 seconds are spent...

Logically, if you assume infinite processors will speed up the 85% infinitely, that is the run time for that portion is going to be near zero, what you are left with is the 15%. Thus the maximum speedup is ~6.6 times. How many cpus to speed up to 80% of...