Exercise 1, illegal instruction (core dumped)

[Maccchiatooo]

Hi, I try to run the exercise 01 by my desktop, and the result is correct. However, I cannot get the timer and bandwidth. the results give

Total size S = 4194304 N = 4096 M = 1024 Computed result for 4096 x 1024 is 4194304.000000 Illegal instruction (core dumped)

I also try the given solution, same issue.