title: Efficiency & speedup of parallel vs. serial
body: <p>Currently, I am reading over a study a guide that my professor handed out in class. The study guide is not an assignment, just something to know what to expect on an exam. I've completed all but 1 problem and was hoping someone could help me out.</p>
  
  <p>Here is the question:
  Suppose Tserial = n and Tparallel = n/p + log2(p), where times are in miliseconds and p is the 
  number of processes. If we increase p by a factor of k, find a formula for how much we’ll need to increase n in order to maintain constant efficiency. How much should we increase n by if we double the number of processes from 8 to 16? Is the parallel program scalable?</p>
  
  <p>Any help in understanding this would be greatly appreciated.</p>