>If you put this in your script rather than the g09 command what does it say? > >ulimit -a
That was a very good hint. I first ran ssh to compute-0-1 and saw "unlimited" value for "max memory size" and "virtual memory". Then I submitted the job with --mem=2000M and put the command in the slurm script. I then noticed that "max memory size" is about "2000000" while "virtual memory" is about 2500000. I guessed that the problem is with the virtual memory which program wants to allocate. By setting --mem=4000M, the error disappeared and now the job is running. Thank you very much. Regards, Mahmood
