[经验]

【大联大世平Intel®神经计算棒NCS2试用体验】Openvino工具在树莓派上的使用（跑一个例程）

2020-7-19 23:20:04

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近期刚收到邮件openvino出了最新的linux版本（l_openvino_toolkit_p_2020.4.287.tgz），故见猎心喜，试图在树莓派上安装，谁知把树莓派TF卡写坏了，估计试用会稍稍暂停几天……

以下是之前TF卡尚好时的实验记录，正文开始：

安装完成后，在/opt/intel/openvino/inference_engine/samples/目录下有各种例程，我们先拿一个最简单的来试试NCS2是否已经安装了吧。

把NCS2计算棒插在树莓派的某个USB接口上。

cd /opt/intel/openvino/deployment_tools/inference_engine/samples/python

进入该目录以后，用ls命令看看python例程有哪些

pi@raspberrypi:/opt/intel/openvino/deployment_tools/inference_engine/samples/python$ ls
classification_sample classification_sample_async hello_query_device object_detection_sample_ssd requirements.txt style_transfer_sample

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用cd命令进入hello_query_device，执行pi@raspberrypi:/opt/intel/openvino/deployment_tools/inference_engine/samples/python$ cd hello_query_device/

再查看目录下文件，只有一个py文件。

pi@raspberrypi:/opt/intel/openvino/deployment_tools/inference_engine/samples/python/hello_query_device$ ls
hello_query_device.py README.md

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执行这个文件试试：

pi@raspberrypi:/opt/intel/openvino/deployment_tools/inference_engine/samples/python/hello_query_device$ python3 hello_query_device.py
Available devices:
Device: MYRIAD
Metrics:
DEVICE_THERMAL: UNSUPPORTED TYPE
RANGE_FOR_ASYNC_INFER_REQUESTS: 3, 6, 1
SUPPORTED_CONFIG_KEYS: CONFIG_FILE, PERF_COUNT, EXCLUSIVE_ASYNC_REQUESTS, DEVICE_ID, VPU_MYRIAD_PLATFORM, VPU_IGNORE_IR_STATISTIC, VPU_CUSTOM_LAYERS, VPU_MYRIAD_FORCE_RESET, VPU_PRINT_RECEIVE_TENSOR_TIME, LOG_LEVEL, VPU_HW_STAGES_OPTIMIZATION
SUPPORTED_METRICS: DEVICE_THERMAL, RANGE_FOR_ASYNC_INFER_REQUESTS, SUPPORTED_CONFIG_KEYS, SUPPORTED_METRICS, OPTIMIZATION_CAPABILITIES, FULL_DEVICE_NAME, AVAILABLE_DEVICES
OPTIMIZATION_CAPABILITIES: FP16
FULL_DEVICE_NAME: Intel Movidius Myriad X VPU
AVAILABLE_DEVICES: 1.1.2-ma2480
Default values for device configuration keys:
CONFIG_FILE:
PERF_COUNT: OFF
EXCLUSIVE_ASYNC_REQUESTS: OFF
DEVICE_ID:
VPU_MYRIAD_PLATFORM:
VPU_IGNORE_IR_STATISTIC: OFF
VPU_CUSTOM_LAYERS:
VPU_MYRIAD_FORCE_RESET: OFF
VPU_PRINT_RECEIVE_TENSOR_TIME: OFF
LOG_LEVEL: LOG_NONE
VPU_HW_STAGES_OPTIMIZATION: ON

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拔出NCS2再尝试一次。

pi@raspberrypi:/opt/intel/openvino/deployment_tools/inference_engine/samples/python/hello_query_device$ python3 hello_query_device.py
Available devices:
pi@raspberrypi:/opt/intel/openvino/deployment_tools/inference_engine/samples/python/hello_query_device$

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可以看到，这次没有找到可用NCS棒。以上是跑最简单的例程，因某些原因，考虑先发出来，后续再补充完善。