topic Yes, there is a known in Analyzers

Unable to load .pdb files after profiling using VS2019

bechard__malcolm — Fri, 17 Apr 2020 16:00:30 GMT

Hey,

After I profile my C++ application VTune just sits trying to load the .pdb for one of my libraries. It never moves past this .pdb. The .pdb it gets stuck on is random for each time I run. This application can be profiled without issue when compiled using VS2015 using the same Vtune version I've tried both compiling using /Zi and /Z7, but with the same results.

Behavior is identical when using the standalone VTune, or using the VS2019 integrated one. Anything I can do to help diagnose this?

Thanks

Operating system and version

Windows 10

Tool version:

VTune 2020, Update 1. 607630

Compiler version:

MSVC 2019. 16.5.4

GNU Compiler Collection (GCC)* or Microsoft Visual Studio* version (if applicable)

MSVC 2019. 16.5.4, 14.25.28610

Hello,

Denis_M_Intel — Fri, 17 Apr 2020 16:48:32 GMT

Hello,

Can you collect and upload VTune logs here? While VTune is hung finalizing a result, get the PID of the vtune-backend.exe (you can find it in the Task Manager -> Details, pid column) and run the following command:

<VTune_install_dir\bin64\amplxe-feedback.exe -create-bug-report=hang -no-system-info -dump-stack=<vtune-backend.exe PID>

It will create hang.zip archive with VTune logs and a stack dump in the working directory.

And what debug information option is used for building your libraries? Can you try to build them with "/DEBUG:FULL"

Thank you for the note about

bechard__malcolm — Fri, 17 Apr 2020 17:12:51 GMT

Thank you for the note about /DEBUG! I was using /DEBUG:fastlink, which is one thing that is different when compiling with VS2019 vs VS2015. Changing it back to just /DEBUG fixes the issue.

Is this a known limitation?

Yes, there is a known

Denis_M_Intel — Mon, 20 Apr 2020 08:54:17 GMT

Yes, there is a known limitation with /DEBUG:fastlink but VTune did not hang before. Thank you for reporting this issue.

Hey bechard, malcolm

ArunJ_Intel — Wed, 22 Apr 2020 05:54:49 GMT

Hey bechard, malcolm

Good to know the solution provided helps. Could you please confirm if we can close the case or is there anything else you need help with.

Thanks

Arun Jose

yep you can close it. I'll

bechard__malcolm — Wed, 22 Apr 2020 15:14:45 GMT

yep you can close it. I'll mention the program doesn't full hang, it just gets stuck trying to load the .dll/.pdb file .I can still somewhat interact with the window but I dont think the button really do much (such as cancel).

Thanks

Thanks for the confirmation.

ArunJ_Intel — Thu, 23 Apr 2020 06:38:26 GMT

Thanks for the confirmation. We are closing the case. Please feel free to raise a new thread for further issues