topic Re: VTune Hotspot Profiler, No Function Names in Release mode in Analyzers

VTune Hotspot Profiler, No Function Names in Release mode

Lamb__Tripp — Wed, 10 Nov 2021 17:47:34 GMT

I just started using the hotspot analysis from the VTune Performance Profiler for a Fortran Project. Is there a way to get the function names to show up in Release mode?

I've messed around with several project settings, but I can't seem to find what I need to change. They are showing up fine in Debug mode.

Re: VTune Hotspot Profiler, No Function Names in Release mode

Vladimir_T_Intel — Thu, 11 Nov 2021 10:51:13 GMT

Hello,

Are you compiling Fortran code on Windows or Linux?

Anyway, on Windows you might want to try compiling with, for example: -debug:full -O2

Using -O2 is overriding cancelling optimization and still preserving debug symbols.

I found a nice detailed thread on this topic with Steve Lionel answering here: https://community.intel.com/t5/Intel-Fortran-Compiler/compiler-flags-for-release-with-debug-symbols/td-p/1150779

On Linux it should also work, as well as -g option.

Hope it helps.

Re: VTune Hotspot Profiler, No Function Names in Release mode

Lamb__Tripp — Fri, 12 Nov 2021 17:22:15 GMT

Compiling on Windows.

I've tried -debug:full. It didn't seem to make a difference, but I hadn't tried -O2. Thank you.

EDIT: Changing those two settings in the Visual Studio Project settings didn't change anything. I also added the arguments to the command line setting also to no avail. I'm still only getting names like func@0x4b2e72b2 when I use the release mode build in the Performance Profiler.

Re: VTune Hotspot Profiler, No Function Names in Release mode

Vladimir_T_Intel — Fri, 12 Nov 2021 19:35:43 GMT

Are you sure that the func@0x4b2e72b2 belongs to a binary you've compiled? (not to some system module)

Re: VTune Hotspot Profiler, No Function Names in Release mode

Lamb__Tripp — Fri, 12 Nov 2021 19:37:29 GMT

That one specifically? No. But every function in the list has a name in that form.

Re: VTune Hotspot Profiler, No Function Names in Release mode

Vladimir_T_Intel — Sat, 13 Nov 2021 08:55:37 GMT

Do you observe .pdb files created in your project when using those options? If not, would you try /Zi then?

Re: VTune Hotspot Profiler, No Function Names in Release mode

Lamb__Tripp — Mon, 15 Nov 2021 21:19:16 GMT

Using /debug:full or /Zi will build a vc160.pdb file but it will not create a pdb file with the same name as the executable.

Re: VTune Hotspot Profiler, No Function Names in Release mode

Vladimir_T_Intel — Wed, 17 Nov 2021 10:30:53 GMT

Then I'd recommend to submitting a question on the Fortran compiler forum. I suppose you will find an answer on .pdb files much faster there.

Re: VTune Hotspot Profiler, No Function Names in Release mode

Lamb__Tripp — Fri, 19 Nov 2021 17:13:04 GMT

Will do! Thank you for the help.

It seems like I must have some option somewhere overriding the debug information being generated. I'll ask that forum.

Re:VTune Hotspot Profiler, No Function Names in Release mode

AlekhyaV_Intel — Tue, 23 Nov 2021 11:01:54 GMT

Hi,

Thank you for accepting our solution. If you need any further assistance, please post a new question as this thread will no longer be monitored by Intel.

Regards,

Alekhya

Re: Re:VTune Hotspot Profiler, No Function Names in Release mode

Lamb__Tripp — Thu, 25 Nov 2021 00:34:30 GMT

I found the answer to my question after some subsequent work.

In order for the executable to build with Debug Info intact by changing settings in the Visual Studio project settings, you need to also change the Linker->Debugging->"Generate Debug Info" setting to Yes. Only changing the Fortran->Debugging->"Debug Information Format" to Full isn't enough on it's own.

Hopefully this will help someone else one day.