简介
对二代计算棒，官方宣布其性能是一代的8倍。
测试结果
测试代码使用的是官方提供的benchmark_app
Count：执行的次数
Duration：执行Count总共使用的时间
Latency：从该次数据输入到得到该结果的时间
Throughput：就是在同步，或者异步条件下所能达到的实际速度。
inference requests: 我目前认为是计算棒能加载几个网络模型，二代是能加载4个的。测试时有意进行了限制为2的测试，方便和一代对比。
USB2.0
Full device name: Intel Movidius Myriad 2 VPU
[Step 10/11] Measuring performance (Start inference asyncronously, 2 inference requests, limits: 1000 iterations)
Count: 1000 iterations
Duration: 25783.63 ms
Latency: 51.54 ms
Throughput: 38.78 FPS[Step 10/11] Measuring performance (Start inference syncronously, limits: 1000 iterations)[Step 11/11] Dumping statistics report
Count: 1000 iterations
Duration: 30224.62 ms
Latency: 30.22 ms
Throughput: 33.09 FPSFull device name: Intel Movidius Myriad X VPU
[Step 10/11] Measuring performance (Start inference asyncronously, 2 inference requests, limits: 1000 iterations)[Step 11/11] Dumping statistics report
Count: 1000 iterations
Duration: 6170.91 ms
Latency: 12.31 ms
Throughput: 162.05 FPS
[Step 10/11] Measuring performance (Start inference asyncronously, 4 inference requests, limits: 1000 iterations)[Step 11/11] Dumping statistics report
Count: 1000 iterations
Duration: 5580.84 ms
Latency: 22.27 ms
Throughput: 179.18 FPS[Step 10/11] Measuring performance (Start inference syncronously, limits: 1000 iterations)[Step 11/11] Dumping statistics report
Count: 1000 iterations
Duration: 11834.24 ms
Latency: 11.83 ms
Throughput: 84.51 FPSUSB3.0
Full device name: Intel Movidius Myriad 2 VPU
[Step 10/11] Measuring performance (Start inference asyncronously, 2 inference requests, limits: 1000 iterations)[Step 11/11] Dumping statistics report
Count: 1000 iterations
Duration: 25867.01 ms
Latency: 51.71 ms
Throughput: 38.66 FPS[Step 10/11] Measuring performance (Start inference syncronously, limits: 1000 iterations)[Step 11/11] Dumping statistics report
Count: 1000 iterations
Duration: 27204.58 ms
Latency: 27.20 ms
Throughput: 36.77 FPSFull device name: Intel Movidius Myriad X VPU
[Step 10/11] Measuring performance (Start inference asyncronously, 2 inference requests, limits: 1000 iterations)[Step 11/11] Dumping statistics report
Count: 1000 iterations
Duration: 4098.44 ms
Latency: 8.19 ms
Throughput: 244.00 FPS[Step 10/11] Measuring performance (Start inference asyncronously, 4 inference requests, limits: 1000 iterations)[Step 11/11] Dumping statistics report
Count: 1000 iterations
Duration: 3483.48 ms
Latency: 13.91 ms
Throughput: 287.07 FPS[Step 10/11] Measuring performance (Start inference syncronously, limits: 1000 iterations)[Step 11/11] Dumping statistics report
Count: 1000 iterations
Duration: 7649.50 ms
Latency: 7.63 ms
Throughput: 130.99 FPS
结论
在USB3.0条件下，二代计算棒大约是一代的7.5倍速度。和官宣相差不多。