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Load Two Networks on NCS2 Error

Hello, I am using the NCS2 with a raspberry 4

I executed this commands on the python API, and it gives me the attached errors when loading a second IR to the NCS2

from openvino.inference_engine import IENetwork, IECore
ie=IECore()
model_xml1 = '/home/pi/models/face-detection-retail-0004.xml'
model_bin1 = '/home/pi/models/face-detection-retail-0004.bin'
net1=ie.read_network(model=model_xml1, weights=model_bin1, init_from_buffer=False)
num_requests=1
device = 'MYRIAD'
ln1=ie.load_network(network=net1, num_requests=num_requests, device_name=device)
model_xml2 = '/home/pi/models/head-pose-estimation-adas-0001.xml'
model_bin2 = '/home/pi/models/head-pose-estimation-adas-0001.bin'
net2=ie.read_network(model=model_xml2, weights=model_bin2, init_from_buffer=False)
ln2=ie.load_network(network=net2, num_requests=num_requests, device_name=device)

 

E: [global] [      3191] [Scheduler00Thr] dispatcherEventSend:61	Write failed -1

E: [xLink] [      3191] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [      3192] [python3] addEvent:264	Condition failed: event->header.flags.bitField.ack != 1
E: [global] [      3192] [python3] addEventWithPerf:276	 addEvent(event) method call failed with an error: 3
E: [global] [      3193] [python3] XLinkReadData:156	Condition failed: (addEventWithPerf(&event, &opTime))
E: [ncAPI] [      3193] [python3] ncGraphAllocate:2062	Can't read input tensor descriptors of the graph, rc: X_LINK_ERROR
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "ie_api.pyx", line 306, in openvino.inference_engine.ie_api.IECore.load_network
  File "ie_api.pyx", line 315, in openvino.inference_engine.ie_api.IECore.load_network
RuntimeError: Failed to allocate graph: NC_ERROR
>>> E: [global] [      4016] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [      4016] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [      5016] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [      5017] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [      6014] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [      6014] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [      7013] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [      7013] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [      8012] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [      8012] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [      9011] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [      9012] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     10010] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     10010] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     11009] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     11009] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     12008] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     12008] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     13007] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     13007] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     14006] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     14006] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     15005] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     15005] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     16004] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     16004] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     17003] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     17003] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     18002] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     18002] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     19001] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     19001] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     20000] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     20000] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     20999] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     20999] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     21998] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     21998] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     22997] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     22997] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     23996] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     23996] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     24995] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     24995] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     25994] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     25994] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     26993] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     26993] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     27992] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     27992] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     28991] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     28991] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     29990] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     29990] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     30989] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     30989] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     31988] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     31988] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     32987] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     32987] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     33986] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     33987] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     34985] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     34986] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     35984] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     35985] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     36983] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     36984] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     37982] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     37983] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     38981] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     38982] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     39980] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     39980] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     40979] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     40979] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     41978] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     41978] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     42977] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     42977] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     43976] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     43976] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     44975] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     44975] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     45974] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     45974] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     46973] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     46973] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     47972] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     47972] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     48971] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     48971] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     49970] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     49971] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     50969] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     50970] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     51968] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     51969] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     52967] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     52968] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     53967] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     53967] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     54966] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     54966] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     55965] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     55965] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     56964] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     56964] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     57963] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     57963] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     58962] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     58962] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     59961] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     59961] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     60960] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     60960] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     61959] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     61959] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     62958] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     62958] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     63957] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     63957] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     64956] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     64956] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     65955] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     65955] [Scheduler00Thr] sendEvents:1027	Event sending failed
E: [global] [     66954] [Scheduler00Thr] dispatcherEventSend:53	Write failed (header) (err -4) | event XLINK_WRITE_REQ

E: [xLink] [     66954] [Scheduler00Thr] sendEvents:1027	Event sending failed

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5 Replies
Beginner
209 Views

Also, running the benchmark app before the previous python commands, shows that the NCS2 is working correctly, however, running the benchmark after the commands, gives error:

 

BEFORE:
 

pi@raspberrypi:~/dldt/bin/armv7l/Release $ ./benchmark_app -m /home/pi/models/face-detection-retail-0004.xml -d MYRIAD
[Step 1/11] Parsing and validating input arguments
[ INFO ] Parsing input parameters
[Step 2/11] Loading Inference Engine
[ INFO ] InferenceEngine:
    API version ............ 2.1
    Build .................. custom_master_c6e03d73d8064f9c022b19dfa3c9e8c2d3fe93c7
    Description ....... API
[ INFO ] Device info:
    MYRIAD
    myriadPlugin version ......... 2.1
    Build ........... custom_master_c6e03d73d8064f9c022b19dfa3c9e8c2d3fe93c7

[Step 3/11] Setting device configuration
[Step 4/11] Reading the Intermediate Representation network
[ INFO ] Loading network files
[ INFO ] Read network took 40.75 ms
[Step 5/11] Resizing network to match image sizes and given batch
[ INFO ] Network batch size: 1
[Step 6/11] Configuring input of the model
[Step 7/11] Loading the model to the device
[ INFO ] Load network took 2744.84 ms
[Step 8/11] Setting optimal runtime parameters
[Step 9/11] Creating infer requests and filling input blobs with images
[ INFO ] Network input 'data' precision U8, dimensions (NCHW): 1 3 300 300
[ WARNING ] No input files were given: all inputs will be filled with random values!
[ INFO ] Infer Request 0 filling
[ INFO ] Fill input 'data' with random values (image is expected)
[ INFO ] Infer Request 1 filling
[ INFO ] Fill input 'data' with random values (image is expected)
[ INFO ] Infer Request 2 filling
[ INFO ] Fill input 'data' with random values (image is expected)
[ INFO ] Infer Request 3 filling
[ INFO ] Fill input 'data' with random values (image is expected)
[Step 10/11] Measuring performance (Start inference asyncronously, 4 inference requests, limits: 60000 ms duration)

[Step 11/11] Dumping statistics report
Count:      4868 iterations
Duration:   60066.16 ms
Latency:    48.67 ms
Throughput: 81.04 FPS

 

 

AFTER:

pi@raspberrypi:~/dldt/bin/armv7l/Release $ ./benchmark_app -m /home/pi/models/face-detection-retail-0004.xml -d MYRIAD
[Step 1/11] Parsing and validating input arguments
[ INFO ] Parsing input parameters
[Step 2/11] Loading Inference Engine
[ INFO ] InferenceEngine: 
	API version ............ 2.1
	Build .................. custom_master_c6e03d73d8064f9c022b19dfa3c9e8c2d3fe93c7
	Description ....... API
[ INFO ] Device info: 
	MYRIAD
	myriadPlugin version ......... 2.1
	Build ........... custom_master_c6e03d73d8064f9c022b19dfa3c9e8c2d3fe93c7

[Step 3/11] Setting device configuration
[Step 4/11] Reading the Intermediate Representation network
[ INFO ] Loading network files
[ INFO ] Read network took 19.71 ms
[Step 5/11] Resizing network to match image sizes and given batch
[ INFO ] Network batch size: 1
[Step 6/11] Configuring input of the model
[Step 7/11] Loading the model to the device
W: [ncAPI] [    385046] [benchmark_app] ncDeviceOpen:936	ncDeviceOpen() XLinkBootRemote returned error X_LINK_COMMUNICATION_FAIL for 1.1.4.3-ma2480
E: [ncAPI] [    400046] [benchmark_app] ncDeviceOpen:1008	Failed to find booted device after boot
W: [ncAPI] [    400046] [benchmark_app] ncDeviceOpen:1011	Device (1.1.4.3-ma2480) doesn't disappear after firmware loading
[ ERROR ] Can not init Myriad device: NC_ERROR

 

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Hi David,

 

Thanks for reaching out.

We are currently looking into your issue and will come back to you as soon as possible.

 

Regards,

Javier A.

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Hi David,

 

We tested your code on Windows 10 and Raspbian OS. On Windows, we got the same behavior as you with num_requests=1. When we changed to num_requests = 2, the two models loaded fine so, it resolved the issue.

On our Raspberry Pi, it works with both num_request=1 and 2. We used OpenVINO™ Toolkit 2020.1 version on Raspberry Pi.

Which version of OpenVINO™ Toolkit and which version of the models you are using? You should use models from Open Model Zoo 2019R3.

 

Regards,

Javier A.

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Beginner
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Thanks for the response.

I think we are using 2020.3 from https://github.com/opencv/dldt.git

For the models, face-detection-retail-0004 is from 2019R3 and head-pose-estimation-adas-0001 is from 2020.2

However, the problem seems to have disappeared after unplugging all other usb devices except of the NCS2

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Hi David,

 

It sounds like it may be due to a power delivery issue. We are glad that you resolved it!

Thanks for sharing your solution with the community.

 

Regards,

Javier A.

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