Debugging Auto-Device Plugin
============================


.. meta::
   :description: In OpenVINO Runtime, you can enable Instrumentation and Tracing Technology API (ITT API) of Intel® VTune™
                 Profiler to control trace data during execution of AUTO plugin.


Using Debug Log
###############

In case of execution problems, just like all other plugins, Auto-Device provides the user with information on exceptions and error values. If the returned data is not enough for debugging purposes, more information may be acquired by means of ``ov::log::Level``.

There are six levels of logs, which can be called explicitly or set via the ``OPENVINO_LOG_LEVEL`` environment variable (can be overwritten by ``compile_model()`` or ``set_property()``):

0 - ``ov::log::Level::NO``
1 - ``ov::log::Level::ERR``
2 - ``ov::log::Level::WARNING``
3 - ``ov::log::Level::INFO``
4 - ``ov::log::Level::DEBUG``
5 - ``ov::log::Level::TRACE``

.. tab-set::

   .. tab-item:: Python
      :sync: py

      .. doxygensnippet:: docs/articles_en/assets/snippets/ov_auto.py
         :language: python
         :fragment: [part6]

   .. tab-item:: C++
      :sync: cpp

      .. doxygensnippet:: docs/articles_en/assets/snippets/AUTO6.cpp
         :language: cpp
         :fragment: [part6]

   .. tab-item:: OS environment variable
      :sync: os-environment-variable

      .. code-block:: sh

         When defining it via the variable,
         a number needs to be used instead of a log level name, e.g.:

         Linux
         export OPENVINO_LOG_LEVEL=0

         Windows
         set OPENVINO_LOG_LEVEL=0

The property returns information in the following format:

.. code-block:: sh

   [time]LOG_LEVEL[file] [PLUGIN]: message

in which the ``LOG_LEVEL`` is represented by the first letter of its name (ERROR being an exception and using its full name). For example:

.. code-block:: sh

   [17:09:36.6188]D[plugin.cpp:167] deviceName:GPU, defaultDeviceID:, uniqueName:GPU_
   [17:09:36.6242]I[executable_network.cpp:181] [AUTOPLUGIN]:select device:GPU
   [17:09:36.6809]ERROR[executable_network.cpp:384] [AUTOPLUGIN] load failed, GPU:[ GENERAL_ERROR ]


Instrumentation and Tracing Technology
######################################

All major performance calls of both OpenVINO™ Runtime and the AUTO plugin are instrumented with Instrumentation and Tracing Technology (ITT) APIs. To enable ITT in OpenVINO™ Runtime, compile it with the following option:

.. code-block:: sh

   -DENABLE_PROFILING_ITT=ON


For more information, you can refer to:

* `Intel® VTune™ Profiler User Guide <https://www.intel.com/content/www/us/en/docs/vtune-profiler/user-guide/2023-0/instrumentation-and-tracing-technology-apis.html>`__

Analyze Code Performance on Linux
+++++++++++++++++++++++++++++++++

You can analyze code performance using Intel® VTune™ Profiler. For more information and
installation instructions refer to the
`Intel® VTune™ Profiler User Guide <https://www.intel.com/content/www/us/en/docs/vtune-profiler/user-guide/2023-0/instrumentation-and-tracing-technology-apis.html>`__
With Intel® VTune™ Profiler installed you can configure your analysis with the following steps:

1. Open Intel® VTune™ Profiler GUI on the host machine with the following command:

   .. code-block:: sh

      cd /vtune install dir/intel/oneapi/vtune/2021.6.0/env
      source vars.sh
      vtune-gui


2. Select **Configure Analysis**

3. In the **where** pane, select **Local Host**

   .. image:: ../../../../assets/images/OV_UG_supported_plugins_AUTO_debugging-img01-localhost.png
      :align: center

4. In the **what** pane, specify your target application/script on the local system.

   .. image:: ../../../../assets/images/OV_UG_supported_plugins_AUTO_debugging-img02-launch.png
      :align: center

5. In the **how** pane, choose and configure the analysis type you want to perform, for example, **Hotspots Analysis**: identify the most time-consuming functions and drill down to see time spent on each line of source code. Focus optimization efforts on hot code for the greatest performance impact.

   .. image:: ../../../../assets/images/OV_UG_supported_plugins_AUTO_debugging-img03-hotspots.png
      :align: center

6. Start the analysis by clicking the start button. When it is done, you will get a summary of the run, including top hotspots and top tasks in your application:

   .. image:: ../../../../assets/images/OV_UG_supported_plugins_AUTO_debugging-img04-vtunesummary.png
      :align: center

7. To analyze ITT info related to the Auto plugin, click on the **Bottom-up** tab, choose the **Task Domain/Task Type/Function/Call Stack** from the dropdown list - Auto plugin-related ITT info is under the MULTIPlugin task  domain:

   .. image:: ../../../../assets/images/OV_UG_supported_plugins_AUTO_debugging-img05-vtunebottomup.png
      :align: center


