Consider a hypothetical block with $8$ threads executing a section of code

before reaching a barrier. The threads require the following amount of time

$($in microseconds$)$ to execute the sections: $2\mathrm{.}0,2\mathrm{.}3,3\mathrm{.}0,2\mathrm{.}8,2\mathrm{.}4,1\mathrm{.}9,2\mathrm{.}6,$ and

$2\mathrm{.}9$; they spend the rest of their time waiting for the barrier. What pe