Hi 'm having an issue when I try to make the synthesis of my project, in concrete in when I do the harden in the user project example. The error is as follows

/usr/bin/xvfb-run: line 181:  1524 Killed                  DISPLAY=:$SERVERNUM XAUTHORITY=$AUTHFILE "$@" 2>&1
[ERROR]: during executing: "bash /openLANE_flow/scripts/klayout/xor.sh /project/openlane/user_project_wrapper/runs/user_project_wrapper/results/magic/user_project_wrapper.gds /project/openlane/user_project_wrapper/runs/user_project_wrapper/results/klayout/user_project_wrapper.gds user_project_wrapper /project/openlane/user_project_wrapper/runs/user_project_wrapper/results/klayout/user_project_wrapper.xor.xml |& tee >&@stdout /project/openlane/user_project_wrapper/runs/user_project_wrapper/logs/klayout/34-klayout.xor.log"
[ERROR]: Exit code: 1
[ERROR]: Last 10 lines:
child process exited abnormally

[ERROR]: Please check bash  log file
[ERROR]: Dumping to /project/openlane/user_project_wrapper/runs/user_project_wrapper/error.log

I check the logs but is the same info that the one presented here. Any idea how to find the cause of that?

Please take a look at "dmesg" to see whether it was an out-of-memory that killed the process

Thanks, yes I look the dmesg and is an out of memory problem. I will increase the RAM and try again.