topic Dear Zhu, Zhenyu in Intel® Distribution of OpenVINO™ Toolkit

Openvino Inference Engine Python API support on GNA

Zhenyu_Z_Intel — Thu, 05 Sep 2019 00:00:40 GMT

I am using the Openvino to develop a python app. However I got the following error when trying to run the inference engine on GNA device. The same python script using the inference engine python API runs ok in CPU mode.

1. Can you confirm if the inference engine python API support GNA device?

2. Does IE support HETERO:GNA,CPU mode in either C++ or Python API?

exec_net = ie.load_network(network=net, device_name=FLAGS.device)

File "ie_api.pyx", line 85, in openvino.inference_engine.ie_api.IECore.load_network

File "ie_api.pyx", line 92, in openvino.inference_engine.ie_api.IECore.load_network

RuntimeError: Device with "GNA_AUTO" name is not registered in the InferenceEngine

Dear Zhu, Zhenyu

Shubha_R_Intel — Thu, 05 Sep 2019 21:39:01 GMT

Dear Zhu, Zhenyu

Unfortunately GNA is not supported by the HETERO plugin. These are the devices you can use:

-d HETERO:FPGA,GPU,CPU

Please review the following document:

http://docs.openvinotoolkit.org/latest/_docs_IE_DG_supported_plugins_HETERO.html

Sincerely,

Shubha

Dear Dear Zhu, Zhenyu,

Shubha_R_Intel — Fri, 06 Sep 2019 16:28:00 GMT

Dear Dear Zhu, Zhenyu,

The Python API for Inference Engine supports the same plugins which the regular C++ Inference Engine supports. So there is no limitation on Python API's support of GNA. If Python OpenVino code fails to load the GNA plugin, then it could be a bug. Please let me know.

Hope it helps,

Thanks,

Shubha

Shubha,

Zhenyu_Z_Intel — Thu, 12 Sep 2019 05:00:35 GMT

Shubha,

Thanks for the reply. You are correct. Python API supports GNA when I changed from using GNA_AUTO to GNA.

Thanks.

Dear Zhu, Zhenyu,

Shubha_R_Intel — Fri, 20 Sep 2019 20:34:01 GMT

Dear Zhu, Zhenyu,

Glad to hear it ! And thanks for informing the OpenVino community of your findings. it really helps a lot when we share information with each other.

Shubha