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YukunXia / VLOAM-CMU-16833

CMU 16-833 "Robot Localization and Mapping" Course Project
MIT License
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'process had died' problem #11

Closed ehdwp closed 2 years ago

ehdwp commented 2 years ago

Hi.

I am having a problem when I try step4 in this page https://github.com/YukunXia/VLOAM-CMU-16833/tree/master/src/vloam_main#usage-1

I follow this page and use roptopic pub. But, my roslaunch terminal showed error "[vloam_main_node-1] process has died [pid 4477, exit code -11, .."

I am not sure whether I am missing something here. Any help is much appreciated.

YukunXia commented 2 years ago

Just to double-check, by trying step 4, you wanna repeat step 3 without quitting the roslaunch. If yes, I couldn't remember any error like this. And it's usually very hard to debug similar ROS issues. Could you try setting breakpoints and see which line of code killed the vloam_main_node?

ehdwp commented 2 years ago

I'm sorry. I wrote wrong step. I have a problem at step 3. Screenshot from 2022-02-14 15-59-14

in screenshot, I did 'roslaunch vloam_main vloam_main.launch' in first terminal and 'rostopic pub /load_small_dataset_action_server/goal ..' in another terminal.

And my roslaunch terminal showed error 'process has died'.

thank you

YukunXia commented 2 years ago

Ok. As I said, it's very hard to directly identify the problem source from process had died. I'd recommend taking a closer look at the following function and maybe printing a marker message after each line.

https://github.com/YukunXia/VLOAM-CMU-16833/blob/59f37f888356d723f7ff7756e832f9ec3d35adf5/src/vloam_main/src/vloam_main_node.cpp#L125-L180

I suspect the problem might come from the environment setup, especially a dependency issue, because I've run the code plenty of times, and no other people reported similar issues.

ehdwp commented 2 years ago

OK. Thank you for your reply