Ubuntu 24.04 DensifyPoincloud Buffer overflow

[jsnetz]

Have a new PC with Ubuntu 24.04, more RAM and the RTX 4060 TI. after building openMVS 2.3 and testing with the South Park example files i get a Bufffer overflow. It doesnt matter using --cuda-device 0,-1 or -2. After camera model loaded and loading the images there is an error (line 66 in DensifyPointtCloud_Cuda_0_log.txt or line 60 in DensifyPointtCloudCuda-2_log.txt) These files are terminal output with "-v 4"

[App ] error: does not seem to be a tower: X(0.08), Y(66.69), Z(630.57)

After that it runs until "selecting images and then crashed with Buffer overflow in "cuda-device -2" or no output when using "cuda-device -1" or "cuda-device 0".

So I don't know is it a Problem with Interface COLMAP i build openMVS 2.3 with InterfaceVisualSFM. Now I get a Buffer overflow at while running InterfaceVisualSFM. With Ubuntu 22.04 everything running well.

Have somebody build openMVS 2.3 under Ubuntu 24.04 without problems? What are the settings building it? I tried to build version 2.2 and 2.1 but that doesn't work (compile errors)

greetings

joerg

DensifyPointtCloud_Cuda_0_log.txt DensifyPointtCloudCuda-2_log.txt

[cdcseacave]

pls build and run in debug mode

[jsnetz]

Hello cdcseacave

Here the Files greetings joerg

debug_DensPointCloud_cuda_0.txt debug_DensPointCloud_cuda-2.txt

[jsnetz]

Hello cdcseacave good morning, and here the terminal output cmake configure and build

greetings joerg

openMVS_cmake_build_out.txt OpenMVS_cmake_config_out.txt

[cdcseacave]

the cmake config and build look fine, but there is a runtime error in cuda, some cuda call fails, but the output does not say which function; this seems a problem that can be reproduced only on your machine, so if you can, pls do a bit of debugging, put a breakpoint in the function that reports the error and see from where is called

[jsnetz]

Hello Sorry but I'm new what debugging and so on does. So i had to read and look first. Here I have 3 files, maybe this is what you need. First is the normal output, second the gdb logfile and thrid the Terminal output. If you need something additional plese give me a liitel help how to create.

Greetings joerg

DensifyPointCloud-2410081213508B54CB.log gdb_DensifyPointCloud_20241008.txt gdb_DensifyPointCloud_terminal_20241008.txt

[cdcseacave]

in order to get any meaningful debug info from gdb you need to build the project in Debug or RelWithDebInfo

[jsnetz]

ok, I got these files with with debug build and no other additional settings.

[jsnetz]

A weekend later with testing I had some news. The buffer overflow is gone since I use don't use any power strip. Connecting to the wall solve it. Bad news it doesn't work under Ubuntu 24.04 with great datas. The South-Park examples working but when I test with over 400 Images (20MP) DensifyPointCloud hang with SIGSEGV. It's the same using or not Cuda. Logfile attached.

Maybe there are additional dependencies under Ubuntu 24.04 nessassary.

sorry about my english it's a lot of years ago I learned and I wasn't good at school

greetings Joerg

gdb_DPC.log

[cdcseacave]

pls try the latest develop branch, I fixed there a string print problem on gcc

[jsnetz]

Hello My Machine was 2 weeks down, needed new ram-modules. It's the Problem with inter Z790 Boards.

Now its back and I start with a new installation of Ubuntu 24.04. So when installing the additional software is there something I had to look for? Could you tell me which gcc and g++ Versions is to install? Colmap needs gcc-10 and g++-10 to install since 22.04. Which Cuda Version and driver do you use? at the moment I have 12.6 installed but I can only install the 550-driver.

and at least a Question from a really beginner: How can I download the develop version?

Lot of Questions but I think to find the problem I need the same software base to search the Problems. Last Problem I got with gdb was

Thread 16 "DensifyPointClo" received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fffb2a00000 (LWP 16398)] Download failed: Das Argument ist ungültig. Continuing without source file ./string/../sysdeps/x86_64/multiarch/strlen-avx2.S. __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:76

Greetings

Joerg

[cdcseacave]

No special installs, any gcc and cuda version only make sure to use the develop branch of OpenMVS (see internet how to use git)

[jsnetz]

Hello do you changed something in source? Cloned this mornig to build a Release but when Running InterfaceCOLMAP I got a crash. Build as Debug and the here the gdb-log and Terminal output.

Yesterday i got a step forward. I found my 2 years old batchfile based on Peter Falkinghams example (on my Mac). He used InterfaceVisualSFM. so I removed the "colmap image_undistorter " part and reactivate the Interface VisualSFM in openmvs. It runs perfect (build Debug). So, I think its a problem with the data comming from colmap to openMVS.

My about 460 images have a size of 5148x3888 pixel. So, I set in colmap image_undistorter --max_image_size=2000 and everything works perfect. a second test run with --max_image_size=4000 runs also perfect. Now i have the following question. Is the colmap setting of --max_image_size in a combination with the amount of images and the image size?

Thanks a lot

joerg

gdb_IFColmap.log gdb_IFColmap_terminal_out.log