topic -g option slows down execution in Software Tuning, Performance Optimization & Platform Monitoring

-g option slows down execution

cabral__frederico — Wed, 06 May 2015 17:19:56 GMT

Hi all.

Has anyone experienced problems with execution time by using icc -g option,

in order to analise the source code's behavior inside VTune ?

I also have some trouble generating vectorization report when compiling with icc -g

option ? My *.optrpt file is generated empty if I use icc -g ...

Thanks in advance,

Fred. L. Cabral

As debug options change

TimP — Wed, 06 May 2015 20:13:00 GMT

As debug options change default to -O0, you must set -O2 or O3 explicitly.

Typically, you need -debug inline-debug-info and maybe a new parallel debug info option which I haven't seen adequately documented for VTune, but it may be covered in the video which came out today.