huawei-noah/SMARTS

Laggy replay of recorded envision trajectories

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#1,356 opened on Mar 27, 2022

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help wanted

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Description

High Level Description When replaying the .jsonl file with large amount of (~30) self-controlled vehicles, the envision video looks laggy.

Desired SMARTS version 0.5.1

Problems The replay of .jsonl file becomes laggy when more ego vehicles involved. However, when facing same or even more background traffic vehicles and less ego vehicles, envision works smoothly. My confusion is that since I am just play back recorded trajectories, why things can be different between ego vehicle and background traffic, and is there a way to accelerate the replay of massive ego vehicles. I attached an example laggy-replayed .jsonl file below. gail_i80_2022032204311470.jsonl.zip

Contributor guide

Research direction
Investigate the rendering path for envision when replaying trajectories with many ego vehicles. Compare the handling of ego vehicles versus background traffic vehicles in the replay logic.
Tech stack
python
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitPython
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75