It's been almost a week now and the Jetson Nano is working fine with 2022-01-1 and BI 5.5.4.5. I am not running any custom models. I am only feeding it 2 LPR cameras during the day nothing at night. Response times are low to mid 200ms.
I've been playing with a 2Gb Nano to see whether it would be viable as a DeepStack server. I'm currently running DeepStack 2022-01-1 with the combined.pt custom model and without starting the default object detection API. (The combined model seems to be a little lighter weight than the default model.)
Under "normal" activity (I wish I had watched it during the snow storm a couple of days ago) it's processing an average of 14 images/minute with an average processing time of 356ms. This is from 5x4mp, 1x3mp, and 5x2mp cameras, all sending mainstream images to DeepStack. It takes ~430ms to process 4mp images, and ~300ms to process 2mp images.
Sending the D1 (704x480) substream images instead was showing sub to low 200ms processing times.
The 2Gb system doesn't seem adequate to handle large models, or multiple models. The dark model by itself barely runs, and trying to run combined and dark at the same time pretty much brought the system to its knees. I haven't been able to get the Nano to run the openlogo model at all. Even bumping up the timeout to 5 minutes never returned a result prior to timeout.
I suspect the 4Gb Nano would be noticeably better, but have to wonder whether 4Gb would be enough to make a robust DeepStack platform capable of running all of the APIs and multiple custom models.
In a niche case where someone only wants to run default object detection, or just a single lightweight custom model, and configures things to just process substream images, the 2Gb Nano seems like a viable choice, and an improvement over DeepStack CPU. It's definitely a lower power consumption alternative to DeepStack GPU on a graphics card.
On the other hand, the Nvidia GT 1030 I picked up at Microcenter for $115 and put in my daughter's
BlueIris server is quite handily running DeepStack GPU with the combined model and turning in a 257ms average processing time on the mainstream images of 8 Dauha 4mp cameras, and it's rated at a pretty thrifty 30W power consumption.