Fig 3. Time gain, speedup and efficiency achieved by parallelization.

An example field of view imaged over 10 hours (200 time points, 360 cells at the last time point) was segmented sequentially and in parallel with varying number of workers. (A) Runtimes. (B) Speedup is calculated by dividing the sequential execution time by the parallel execution time. With 40 workers the algorithm runs 15.4 times faster. (C) Efficiency is the speedup per processor. Note that the efficiency goes down as the number of processors increases.