exercises-solutions.md

Interactive jobs

Exercise 1

si -c8 -t60 --reservation=school-interactive

Exercise 2

si -c32 -t120 --reservation=school-interactive

Remark: AION compute nodes have 2G per core (128 cores, 256G of RAM)

Exercise 3

Q1: can you book the same amount of cores on an IRIS CPU node than the answer of exercice 2? Solution: no, IRIS CPU nodes only have 28 cores

Q2: How much cores would you have to request on a IRIS CPU node to have 64G of RAM? Solution: 14 cores, each cores receives 4G on an IRIS CPU node (28 cores, 128G of RAM)

Batch jobs

Exercise 1

sbatch batch-job/batch-job-launcher.sh

Exercise 2

sbatch -J job1 -o job1.out -e job1.err batch-job/batch-job-launcher.sh sbatch -J job2 -o job2.out -e job2.err batch-job/batch-job-launcher.sh

or

for i in {1..5}; 
do 
	sbatch -J job${i}  -o job${i}.out -e job${i}.err batch-job/batch-job-launcher.sh 
done

Exercise 3

sbatch --mail-user your_email_address --mail-type FAIL,END batch-job/batch-job-launcher.sh