Hello, I have started doing interferometry using Sentinel InSAR data (S1A_IW_SLC__1SDV_20191016T121345_20191016T121412_029484_035ABB_373F, S1A_IW_SLC__1SDV_20191028T121345_20191028T121412_029659_0360C3_574E). When I have stared Coregistration using S1TOPS Coregistration There is an error " Java heap space ". I have tried several times but gotten a similar error and the output phase and intensity are blank. Please solve it.
Hello Kaushik Ghosal
Reason of this issue is that you are running some java process/JVM, which is consuming the memory and the used memory is exceeded the default allocated memory to JVM.
Assuming that you are running java command.
java -jar JARFILE.jar
then in the above line you need to declare how much memory this Java process can take.
e.g you can allocate 1 GM RAM to this JVM process.
java -jar -Xmx1G JARFILE.jar
Lets say you are using some tool which is using JVM, then you need to check where is the configuration file for that tool and then there you can allocate Xmx in that configuration/properties file.
Note:
-Xmx is used to specify the maximum JVM heap size.
Assuming you use Windows OS, then the practical way is trying to increase paging file aka virtual memory in your System Properties. Java GUI consumes memory considerably. If it doesn't work, the Plan B is to use python. Have a look at this:
https://forum.step.esa.int/t/run-processes-of-snap-toolbox-using-python-script/3021
Your error is related to SNAP JVM settings, please search the official SNAP discussion forum, there are several threads on how to solve the issue:
https://forum.step.esa.int/
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