Cluster:
1. qsub -IV -l walltime=24:00:00 -l nodes=1:ppn=8
2. module load R-4.0.0
3. module load matlab-r2020a
4. watch -n 1 'qstat -u username| grep abcd'
5. qpeek -t 1450124
6. Rscript asd.r
7. watch -n 1 pdsh -w mualhpcp39.mpi top -b -n 1 -u [username]
8. watch -n 1 pdsh -w mualhpcp39.mpi nvidia-smi
9. qstat -f 87859 ---> req_information.hostlist. .... 
10. ssh -t username@mualhpcp39 'top'