Consider a program takes $10$s running on a single processor. if $60\%$ of the execution time involves code that is inherently serial and a fraction $40\%$ that involves code that is infinitely parallelizable with no scheduling overhead. then the total time of executing this program on $5$ cores processor is equals to:

Question $7$Answer

a$.$

$0\mathrm{.}68$

b$.$

$6\mathrm{.}8$

c$.$

$1\mathrm{.}47$

d$.$

$5\mathrm{.}1$