openvino/docs/OV_Runtime_UG/supported_plugins/Device_Plugins.md

Inference Device Support

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.. toctree:: :maxdepth: 1 :hidden:

openvino_docs_OV_UG_query_api openvino_docs_OV_UG_supported_plugins_CPU openvino_docs_OV_UG_supported_plugins_GPU openvino_docs_OV_UG_supported_plugins_GNA

OpenVINO™ Runtime can infer deep learning models using the following device types:

• :doc:CPU <openvino_docs_OV_UG_supported_plugins_CPU>
• :doc:GPU <openvino_docs_OV_UG_supported_plugins_GPU>
• :doc:GNA <openvino_docs_OV_UG_supported_plugins_GNA>

For a more detailed list of hardware, see :doc:Supported Devices <openvino_docs_OV_UG_supported_plugins_Supported_Devices>.

.. _devicesupport-feature-support-matrix:

Feature Support Matrix #######################################

The table below demonstrates support of key features by OpenVINO device plugins.

========================================================================================= ============================ =============== =============== Capability CPU GPU GNA
========================================================================================= ============================ =============== =============== :doc:Heterogeneous execution <openvino_docs_OV_UG_Hetero_execution> Yes Yes No
:doc:Multi-device execution <openvino_docs_OV_UG_Running_on_multiple_devices> Yes Yes Partial
:doc:Automatic batching <openvino_docs_OV_UG_Automatic_Batching> No Yes No
:doc:Multi-stream execution <openvino_docs_deployment_optimization_guide_tput> Yes (Intel® x86-64 only) Yes No
:doc:Models caching <openvino_docs_OV_UG_Model_caching_overview> Yes Partial Yes
:doc:Dynamic shapes <openvino_docs_OV_UG_DynamicShapes> Yes Partial No
:doc:Import/Export <openvino_ecosystem> Yes No Yes
:doc:Preprocessing acceleration <openvino_docs_OV_UG_Preprocessing_Overview> Yes Yes No
:doc:Stateful models <openvino_docs_OV_UG_model_state_intro> Yes No Yes
:doc:Extensibility <openvino_docs_Extensibility_UG_Intro> Yes Yes No
========================================================================================= ============================ =============== ===============

For more details on plugin-specific feature limitations, see the corresponding plugin pages.

Enumerating Available Devices #######################################

The OpenVINO Runtime API features dedicated methods of enumerating devices and their capabilities. See the :doc:Hello Query Device C++ Sample <openvino_inference_engine_samples_hello_query_device_README>. This is an example output from the sample (truncated to device names only):

.. code-block:: sh

./hello_query_device Available devices: Device: CPU ... Device: GPU.0 ... Device: GPU.1 ... Device: GNA

A simple programmatic way to enumerate the devices and use with the multi-device is as follows:

.. tab:: C++

.. doxygensnippet:: docs/snippets/MULTI2.cpp
   :language: cpp
   :fragment: [part2]

Beyond the typical "CPU", "GPU", and so on, when multiple instances of a device are available, the names are more qualified. For example, this is how two GPUs can be listed (iGPU is always GPU.0):

.. code-block:: sh

... Device: GPU.0 ... Device: GPU.1

So, the explicit configuration to use both would be "MULTI:GPU.1,GPU.0". Accordingly, the code that loops over all available devices of the "GPU" type only is as follows:

.. tab:: C++

.. doxygensnippet:: docs/snippets/MULTI3.cpp
   :language: cpp
   :fragment: [part3]

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