OpenFOAM v1912 mpirun killed due to memory shortage

When I run an external aero case (70M cells) with porosity in OF v1906 it runs normally. When I switch to OF v1912 it crashes in the beginning and gives the following error:

"Starting time loop

Time = 1

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mpirun noticed that process rank 111 with PID 21978 on node node001 exited on signal 9 (Killed).

Some error occured in calculation.(error code=137)"

Info from cluster: "Out of memory: Kill process 21978 (porousSimpleFoa) score 8 or sacrifice child [4825555.767487] Killed process 21978 (porousSimpleFoa) total-vm:1900080kB, anon-rss:537616kB, file-rss:8280kB"