set term png
  
  set output 'timing1.png'
  set style data linespoints
  set title "Timing for 1-8 OpenMP Threads"
  set grid
  plot 'speedup.txt' using 1:2 lw 3

  set output 'timing2.png'
  set style data linespoints
  set title "Timing for 1-8 OpenMP Threads"
  set grid
  set yrange [0:*]
  plot 'speedup.txt' using 1:2 lw 3

  set output 'speedup.png'
  set style data linespoints
  set title "Speedup for 1-8 OpenMP Threads"
  set grid
  plot 'speedup.txt' using 1:1 title 'ideal' lw 3, \
       'speedup.txt' using 1:3 title 'actual' lw 3
  quit