Snaphu segmentation fault (core dump)

[Snow]

Hi，I have met an problem with snaphu in cygwin64: segmentation fault (core dump).

and the snaphu.log is as follows:

I install snaphu (v 2.0.4) ,and gcc(7.4), and i have tried the solution：

Error converting phase to elevation for DEM generation

Hi, I am getting an error during the final step of the DEM generation process when executing the phase to elevation function. I am using the Fogo dataset from the TOPS Interferometry tutorial. I will first outline how I am generating the data because the tutorial I was following focused on deformation, not topology and I may have missed a fundamental earlier step: 1 Open the products: For DEM generation the products must be Single Look Complex (SLC), and have the same Mode, Track and pass. 2…

by " change “#include <sys/time.h>” into “#include <time.h>”, and then compile and install again".

Also i have tried " comment out the log file line in the snaphu.conf file" in some other topic
, but the error "segmentration fault( core dump) still comes.

Also i have tried use snaphu installed on the snap (Radar–Interferometric–Unwrapping—snaphu unwrapping）, the ram would jump to 99%( my computer is a server with 128G ram）。

can anybody know which causes this problem and how to fix it. I have struggled for this problem for two days. thx a lot.

[ABraun]

Do you also get the error if you switch MCF to MST solver?

[Snow]

I’m not sure. I tried MST, and now 24 hours have pasted, it has not come an result, but the ram looks fine (using49%), it looks like this:

Is that normal? my interest area is 2000km2, with a pair of master and slave.
thanks a lot.

[ABraun]

At least no error so far. The raster is quite large (25000 lines), did you set a suitable tiling and overlap? Also setting the correct number of processors can speed it up.

[Snow]

Thanks so much.
I think this is due i set overlap=0, though i set 12 processors, one week has passed, and snaphu’s treesize has expanded to 53866623 which seems would go on expand.
but i tried series analysis with the same area, 48 pics, the result of step(6,6) comes out in miniutes.
Thanks for your replies again, i really appriciate that.

[ABraun]

Unwrapping in StaMPS works different because it is only applied to a network of persistent scatterers.
Please try a different tile size and more overlap.