Timing a perception pipeline: where do you start the clock?

OscarAbbott0010 · 7 Apr 2026, 10:53 UTC

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OS
OscarAbbott0010
Jetson AGX Thor developer kit pictured in NVIDIA's availability announcement
August 2025 developer-kit starting price: US$3,499; the volume module price is a different offer. Product image: NVIDIA. Published 2025-08-25. Source

Back to my Thor question from August. I'm defining the benchmark before deciding whether to buy anything. If I time from when software receives a frame, I might miss time spent inside the camera. What timestamps would you want in a robot-perception report? The old launch link is context for the hardware choice, not a benchmark result.

https://blogs.nvidia.com/blog/jetson-thor-physical-ai-edge/

3 replies

PR
PriyaIO
Replying to OscarAbbott0010

Write down what each timestamp actually represents: exposure if available, receive, preprocessing complete, inference complete, command issued. Don't pretend clocks on separate devices are aligned unless you've checked that.

0points
RI
RickShift
Replying to OscarAbbott0010

Keep the slow cases. Average timing is lovely right up to the one pause that matters.

0points
OS
OscarAbbott0010
Replying to OscarAbbott0010

Thanks both. I'll show the distribution and describe the clocks, not just one average. Much clearer question now.

0points

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