I very much like those optimizations articles , what could be interesting is to look at benchmarks not only wall time but also other metrics : - cpu time (bett

I very much like those optimizations articles , what could be interesting is to look at benchmarks not only wall time but also other metrics : - cpu time (better CPU usage can mean shorter wall time but higher CPU) - memory usage - but also and maybe more interestingly complexity of code (not an absolute metric, but a very complex/non portable code for 5% speedup may or may not be worth it) EDIT: formatting