Dr. Lawlor's Code, Robots, & Things

January 11, 2014

CPU Performance Counters with “likwid”

Filed under: C++11, Programming — Dr. Lawlor @ 12:01 am

I’m having fun playing with a little command line performance counter toolkit with the silly name of “likwid” which stands for “Like I know what I’m doing!” ┬áIf you haven’t used performance counters while programming, they can very quickly tell you surprising things about your code’s performance, like the fact that you’re getting clobbered by cache misses, not floating point arithmetic.

To get the toolkit running on a recent Ubuntu linux machine (tested on 13.10):

(more…)

Advertisements

Blog at WordPress.com.