topic Re: [Vtune] Failes to profile even with paranoid = -1 or 0 in Analyzers

[Vtune] Failes to profile even with paranoid = -1 or 0

alexcp — Thu, 04 May 2023 09:41:30 GMT

Attempting to profile a program using vtune via command line results on the following failure:

Error: Access to performance monitoring and observability operations is limited. Consider adjusting /proc/sys/kernel/perf_event_paranoid setting to open access to performance monitoring and observability operations for processes without CAP_PERFMON, CAP_SYS_PTRACE or CAP_SYS_ADMIN Linux capability. More information can be found at 'Perf events and tool security' document: https://www.kernel.org/doc/html/latest/admin-guide/perf-security.html perf_event_paranoid setting is 0: -1: Allow use of (almost) all events by all users Ignore mlock limit after perf_event_mlock_kb without CAP_IPC_LOCK >= 0: Disallow raw and ftrace function tracepoint access >= 1: Disallow CPU event access >= 2: Disallow kernel profiling To make the adjusted perf_event_paranoid setting permanent preserve it in /etc/sysctl.conf (e.g. kernel.perf_event_paranoid = <setting>) vtune: Collection failed. vtune: Internal Error

Re: [Vtune] Failes to profile even with paranoid = -1 or 0

JaideepK_Intel — Fri, 05 May 2023 11:49:15 GMT

Hi,

Thank you for posting in Intel communities.

To understand your issue better, could you please provide the below details?

If you are using an older version of vtune please upgrade it to 2023.1 (also check the OS you are using supported https://www.intel.com/content/www/us/en/developer/articles/system-requirements/vtune-profiler-system-requirements.html)
Can you please tell me the name of the operating system and processor details you are using? (If Linux, please specify the distribution like Centos7,8, Ubuntu18,20, etc)
Are you facing this issue with the matrix sample application too? (<vtune installation path>samples/en/C++/matrix), if not attach a sample reproducer and screenshots. so we can reproduce your issue from our end.
Check the output for /proc/sys/kernel/perf_event_paranoid is set as -1
Please attach self-checker logs by running the below command.

<Vtune_installation_directory\latest\bin64\vtune-self-checker.bat> for windows. <Vtune_installation_directory\latest\bin64\vtune-self-checker.sh> for linux.

Thanks,

Jaideep

Re:[Vtune] Failes to profile even with paranoid = -1 or 0

JaideepK_Intel — Fri, 12 May 2023 04:45:57 GMT

Hi,

Could you please provide the details which are mentioned above?

Thanks,

Jaideep

Re:[Vtune] Failes to profile even with paranoid = -1 or 0

JaideepK_Intel — Fri, 19 May 2023 09:19:18 GMT

Hi,

We have not heard back from you. This thread will no longer be monitored by Intel. If you need further assistance, please post a new question.

Thanks,

Jaideep