How-To: Connect to High-Memory Nodes

The cluster has 4 high-memory nodes with 0.75 (2x), 1.5 (2x), and 1x4 (1x) TB of RAM. You can connect to these nodes using the highmem SLURM partition (see below). Jobs allocating more than 200 GB of RAM are automatically routed to the highmem nodes.

Info

Fair use rules apply. As high-memory nodes are a limited resource, excessive use by single users is prohibited and can lead to mitigating actions. Be nice and cooperative with other users. Tip: getent passwd USER_NAME will give you a user's contact details.

How-To

In the cluster there are four High-memory used which can be used:

hpc-login-1:~$ sinfo -p highmem
PARTITION AVAIL  TIMELIMIT  NODES  STATE NODELIST 
highmem      up 14-00:00:0      5   idle hpc-mem-[1-5] 

To connect to one of them, simply allocate more than 200GB of RAM in your job.

hpc-login-1:~$ srun --pty --mem=300GB bash -i
hpc-mem-1:~$

You can also pick one of the hostnames:

hpc-login-1:~$ srun --pty --mem=300GB --nodelist=hpc-mem-2 bash -i
hpc-mem-2:~$

After successfull login, you can see that you are in "highmem" queue:

med0403:~$ squeue
             JOBID PARTITION     NAME     USER ST       TIME  NODES NODELIST(REASON) 
[...]
               270   highmem     bash holtgrem  R       1:25      1 hpc-mem-2