Cluster/Computing-clusters.md

@@ -11,6 +11,18 @@ This page discusses different computing clusters in general. See [Queue system](
 * Check how much disc space your files take: `du -hs /n/work01/username`
 * Check how much disc space is available: `df -h /n/work01/username`
 
+Queue system: need a _submission script_ that specifies resources your job needs, and tells the system how to run your program. In the simplest case, the submission script can be simply
+```bash 
+    #SBATCH -n 1 
+    #SBATCH -t 0-01:00:0
+    ./program > outputfile
+```
+This reserves 1 cpu for your code, and the code can run for 1hr. If the script above is saved in the file `submit.sh`, you can submit the job to the queue by running  
+```bash
+ sbatch submit.sh
+```
+Results (everything the code prints) are saved in file `outputfile`. For more details, see [Cluster/Queue-system]
+
 ## GPU
 
 * Available from IT, Dana knows