topic Alternative to Intel Inspector? in Intel® oneAPI DPC++/C++ Compiler

Alternative to Intel Inspector?

AndrewC — Fri, 23 Aug 2024 18:38:19 GMT

Not directly related to C/C++ but I have always used Intel Inspector for many years on both Windows and Linux to track tricky threading and memory access issues.

Now that it is being retired, what alternatives do people have? Particularly on Windows. Looking for a tool that does not required the code to be recompiled.

On Linux, valgrind is "OK", but it suffers from being open source, and the lack of a GUI makes it painful to use.

Re: Alternative to Intel Inspector?

Alex_Y_Intel — Mon, 26 Aug 2024 08:12:12 GMT

Please try sanitizer: https://www.intel.com/content/www/us/en/developer/articles/technical/find-bugs-quickly-using-sanitizers-with-oneapi-compiler.html

Re: Alternative to Intel Inspector?

AndrewC — Mon, 26 Aug 2024 17:31:20 GMT

My comments
- it requires the code be recompiled with new options - another special build.

- I used Intel Inspector for diagnosing tricky threading issues, not just memory issues.

Re: Alternative to Intel Inspector?

Alex_Y_Intel — Mon, 26 Aug 2024 20:58:33 GMT

Sanitizer is able to do the thread checking too, suppose you have a source code tiny_race.cpp:

icpx -fsanitize=thread -g tiny_race.cpp
icpx: remark: Note that use of '-g' without any optimization-level option will turn off most compiler optimizations similar to use of '-O0'; use '-Rno-debug-disables-optimization' to disable this remark [-Rdebug-disables-optimization]
sravanik@ortce-skl22:~$ ./a.out
==================
WARNING: ThreadSanitizer: data race (pid=1974537)
Write of size 4 at 0x000001913ae8 by main thread:
#0 main /nfs/pdx/home/tiny_race.cpp:10:10 (a.out+0x4e57de)

Previous write of size 4 at 0x000001913ae8 by thread T1:
#0 Thread1(void*) /nfs/pdx/home/tiny_race.cpp:4:10 (a.out+0x4e577b)

Location is global 'Global' of size 4 at 0x000001913ae8 (a.out+0x1913ae8)

Thread T1 (tid=1974557, finished) created by main thread at:
#0 pthread_create <null> (a.out+0x436463)
#1 main /nfs/pdx/home/tiny_race.cpp:9:3 (a.out+0x4e57d4)

SUMMARY: ThreadSanitizer: data race /nfs/pdx/home/tiny_race.c:10:10 in main
==================
ThreadSanitizer: reported 1 warnings