I found out that the standard script that specifies the number of tasks and memory per cpu will do the same thing that I was expecting from packjob (heterogeneous job).
#SBATCH --job-name=myQE #SBATCH --output=big-mem #SBATCH --ntasks=14 #SBATCH --mem-per-cpu=17G #SBATCH --nodes=6 #SBATCH --partition=QUARTZ #SBATCH --account=z5 mpirun pw.x -i mos2.rlx.in What am I seeing then? 6 processes are on a node with 128GB memory (reserved 6*17=102GB) 1, 3, 2, 1 and 1 processes on 5 nodes each with 64GB memory. Regards, Mahmood
