When trying to train with two examples ( using patient1 and patient2 from the latest challenge ), the process gets killed by the system:

kern.log:
Oct 7 14:32:54 mbi046 kernel: [5351259.938491] [20490] 1001 19776 6087461 5584154 11410 0 0 Thread (pooled)
Oct 7 14:32:54 mbi046 kernel: [5351259.938494] Out of memory: Kill process 20490 (Thread (pooled)) score 680 or sacrifice child
Oct 7 14:32:54 mbi046 kernel: [5351259.938499] Killed process 20490 (Thread (pooled)) total-vm:24349844kB, anon-rss:22307068kB, file-rss:29548kB

similar error happens on the MIC DELL Laptop, however here it occurred after the 8th tree was trained.