I am running bkz2.0 with block size 25 in a 8GB primary memory and 2 GB swap memory machine but after running for some time my process gets killed with the above message in the cmd. Can anyone please help to find my questions ans I tried to find in net as well as in the documentation of the sage but nowhere it available. My computers config is intel i5 4th gen 3.2ghz 64 bit running SageMath version 8.1, Release Date: 2017-12-07