cpuburn binary package in Ubuntu Xenial i386

 CPUburn is a collection of programs to put heavy stress on CPU.
 These programs are designed to load CPUs as heavily as possible
 for the purposes of system testing.
 .
 Warning: The goal has been to maximize heat production from the CPU,
 putting stress on the CPU itself, cooling system, motherboard. This
 may cause data loss (filesystem corruption) and possibly permanent
 damage to electronic components. Use at your own risk.

Source package