Missing debug symbols with Intel Fortran and optimization

Tugnoli__Matteo · ‎10-23-2018

Hello everyone,

I am trying to profile my application with VTune Amplifier 2018.

If I compile my application with GCC everything works fine. However with Intel fortran and optimizations higher or equal to -O1 VTune fails to find the debug symbols, i.e. compiling with

-g -O2

fails to find the debug symbols, and so cannot display the source code of the functions, while using

-g -O0

works fine. If I collect data with the optimized code, then recompile with -g -O0 and then re-resolve the collected data, debug symbols are found correctly, however it is quite inconvenient.

How can I get both an optimized executable and correct debug symbols compiling with intel fortran?

Denis_M_Intel · ‎10-24-2018

Hello,
What compiler version is it? Can you check that addr2line Linux utility is able to show function names and source lines for the binary file built with -O2? Can you reproduce the issue on another (some "hello word" application) and attach it?

Re-resolving VTune result with recompiled binaries is not recommended because it could lead to wrong attribution of performance data to functions and source lines.