On page 14 of the document it says
The following command assigns the affinity of a single interrupt vector:
echo <hexadecimal bit mask> > /proc/irq/<irq vector>/smp_affinity
Bit i in <hexadecimal bit mask> indicates whether processor core i is in <irq vector>’s affinity or not.
I'm not sure what that last line means about Bit i in hexadecimal bit mask. What am I supposed to put inside <hexadecimal bit mask>.
Also is the auto tuning utility supposed to do all t he irq affinity for me?