VTune + Caliper problem with "vtune -start-paused ..."

[nrnhines]

I have Ubuntu 24.04, Lenovo thinkStation P5, Intel Xeon w3-2435 x 16
I followed, as far as I understood, the info at https://nrn.readthedocs.io/en/latest/install/debug.html#profiling-with-intel-vtune
Some further details in regard to setting things up are:

Install Intel oneAPI Base Toolkit (intel compilers and includes VTune). I used
https://www.intel.com/content/www/us/en/developer/tools/oneapi/base-toolkit-download.html?operatingsystem=linux

I select the intel compilers with:

source /opt/intel/oneapi/2025.0/oneapi-vars.sh

export CC=icx
export CXX=icpx

Install Caliper

~/soft/Caliper/build$ git diff
diff --git a/cmake/FindITTAPI.cmake b/cmake/FindITTAPI.cmake
index bfd53b29..bce0d04a 100644
--- a/cmake/FindITTAPI.cmake
+++ b/cmake/FindITTAPI.cmake
@@ -6,11 +6,11 @@ find_path(ITT_INCLUDE_DIR
 
 find_library(ITT_LIBRARY
   NAMES ittnotify
-  HINTS ${ITT_PREFIX}/lib)
+  HINTS ${ITT_PREFIX}/lib ${ITT_PREFIX}/lib64)

and

cmake .. -DCMAKE_INSTALL_PREFIX=install -DWITH_VTUNE=ON -DITT_PREFIX=/opt/intel/oneapi/vtune/2025.0/sdk

near the end of the cmake output, we see

-- VTune support             : Yes, using /opt/intel/oneapi/vtune/2025.0/sdk/lib64/libittnotify.a

Build NEURON

cmake .. -G Ninja -DCMAKE_INSTALL_PREFIX=install -DNRN_ENABLE_PROFILING=ON -DNRN_PROFILER=caliper -DCMAKE_PREFIX_PATH=$HOME/soft/Caliper/build/install -DCMAKE_CXX_FLAGS="-fno-omit-frame-pointer" -DNRN_ENABLE_RX3D=OFF

In preparation for performance measurement
In Settings Power, select Power Mode "Performance"
also:

export CALI_SERVICES_ENABLE=vtune
sudo sysctl kernel.perf_event_paranoid=0

To do a performance measurement (eg. a modeldb model)

vtune -start-paused -collect uarch-exploration --no-summary -result-dir nrn_vtune_result nrniv mosinit.hoc
vtune-gui nrn_vtune_result &

My problem is that some of the vtune - start-paused output is

vtune: Warning: Pause command is not supported for managed code profiling. Runtime overhead is still possible. Data size limit may be exceeded.
vtune: Collection paused.

and vtune-gui shows no result data

I suppose this is not a complete blocker since, without the -start-paused I end up with a vtune-gui

I do note that from https://www.intel.com/content/www/us/en/docs/vtune-profiler/installation-guide/2025-0/regular-install.html#ENV, running /opt/intel/oneapi/vtune/latest/bin64$ vtune-self-checker.sh
ends with

The system is ready for the following analyses:
* Performance Snapshot
* Hotspots with HW event-based sampling, HPC Performance Characterization, etc.
* Microarchitecture Exploration
* Memory Access
* Hotspots with HW event-based sampling and call stacks
* Threading with HW event-based sampling

The following analyses have failed on the system:
* Hotspots and Threading with user-mode sampling
* GPU Compute/Media Hotspots (characterization mode)
* GPU Compute/Media Hotspots (source analysis mode)