# Strong scalability plot, HPC

I have to create a strong scalability plot, which measures the execution time for a numberOfThreads =1,2,4,8,16 with size=1024. Here is the table with the results after execution:

And here is the plot based on the table:

I don't know exactly when is a plot strong scalable and if this plot is a strong scalability plot ?

1. In my opinion, it is preferred to plot the execution timing on a log-log plot. The dashed line shows ideal parallelization ($t$/$T$). The data suggests that you might want to add one more datapoint ($T=32$ threads) to show that the "Multiply" parallelization also breaks down (as well as "Block Multiply").
For completeness, strong scaling as a function of # Threads ($T$)
$\text{strong scaling}(T)=\frac{t_1}{t_T*T}$,
where $t_1$ is the execution time for $1$ thread and $t_T$ is the execution time for $T$ threads.