home.md

@@ -394,6 +394,7 @@ The following commands are useful:
 - sinfo
 - sinfo -a
 - sinfo -l
+- sinfo -N -l
 
 ```
 [user@res-hpc-lo01 ~]$ sinfo
@@ -415,6 +416,15 @@ gpu          up   infinite 1-infinite   no       NO        all      1        idl
 
 ```
 
+```
+[user@res-hpc-lo01 ~]$ sinfo -N -l
+Thu Jan 23 12:20:46 2020
+NODELIST        NODES PARTITION       STATE CPUS    S:C:T MEMORY TMP_DISK WEIGHT AVAIL_FE REASON               
+res-hpc-exe013      1      all*        idle 16      2:8:1 128800        0      1   (null) none                 
+res-hpc-exe014      1      all*        idle 24     2:12:1 386800        0      1   (null) none                 
+res-hpc-gpu01       1       gpu        idle 48     2:24:1 515000        0      1   (null) none  
+```
+
 If there are jobs running, you can see the following output:
 ```
 [user@res-hpc-lo01 mpi-benchmarks]$ sinfo 
@@ -577,6 +587,60 @@ salloc: Relinquishing job allocation 267
 
 [user@res-hpc-lo01 ~]$ 
 ```
+In the example above, we won't run a command so we ended up in the bash environment.
+With **exit** we leave the environment and we release the node.
+
+```
+[user@res-hpc-lo01 ~]$ salloc -N1 mpirun ./hello1
+salloc: Granted job allocation 268
+salloc: Waiting for resource configuration
+salloc: Nodes res-hpc-exe013 are ready for job
+Hello world from process 000 out of 001, processor name res-hpc-exe013.researchlumc.nl 
+salloc: Relinquishing job allocation 268
+salloc: Job allocation 268 has been revoked.
+```
+Here we allocated 1 node with one core and ran the openmpi compiled "hello1" program.
+
+Now the same with 2 nodes, 16 cores on each machine:
+```
+[user@res-hpc-lo01 ~]$ salloc -N2 --ntasks-per-node=16 mpirun ./hello1
+salloc: Granted job allocation 270
+salloc: Waiting for resource configuration
+salloc: Nodes res-hpc-exe[013-014] are ready for job
+Hello world from process 003 out of 032, processor name res-hpc-exe013.researchlumc.nl 
+Hello world from process 021 out of 032, processor name res-hpc-exe014.researchlumc.nl 
+Hello world from process 004 out of 032, processor name res-hpc-exe013.researchlumc.nl 
+Hello world from process 005 out of 032, processor name res-hpc-exe013.researchlumc.nl 
+Hello world from process 027 out of 032, processor name res-hpc-exe014.researchlumc.nl 
+Hello world from process 000 out of 032, processor name res-hpc-exe013.researchlumc.nl 
+Hello world from process 029 out of 032, processor name res-hpc-exe014.researchlumc.nl 
+Hello world from process 006 out of 032, processor name res-hpc-exe013.researchlumc.nl 
+Hello world from process 031 out of 032, processor name res-hpc-exe014.researchlumc.nl 
+Hello world from process 007 out of 032, processor name res-hpc-exe013.researchlumc.nl 
+Hello world from process 016 out of 032, processor name res-hpc-exe014.researchlumc.nl 
+Hello world from process 010 out of 032, processor name res-hpc-exe013.researchlumc.nl 
+Hello world from process 019 out of 032, processor name res-hpc-exe014.researchlumc.nl 
+Hello world from process 011 out of 032, processor name res-hpc-exe013.researchlumc.nl 
+Hello world from process 030 out of 032, processor name res-hpc-exe014.researchlumc.nl 
+Hello world from process 012 out of 032, processor name res-hpc-exe013.researchlumc.nl 
+Hello world from process 017 out of 032, processor name res-hpc-exe014.researchlumc.nl 
+Hello world from process 013 out of 032, processor name res-hpc-exe013.researchlumc.nl 
+Hello world from process 018 out of 032, processor name res-hpc-exe014.researchlumc.nl 
+Hello world from process 014 out of 032, processor name res-hpc-exe013.researchlumc.nl 
+Hello world from process 020 out of 032, processor name res-hpc-exe014.researchlumc.nl 
+Hello world from process 015 out of 032, processor name res-hpc-exe013.researchlumc.nl 
+Hello world from process 022 out of 032, processor name res-hpc-exe014.researchlumc.nl 
+Hello world from process 001 out of 032, processor name res-hpc-exe013.researchlumc.nl 
+Hello world from process 023 out of 032, processor name res-hpc-exe014.researchlumc.nl 
+Hello world from process 024 out of 032, processor name res-hpc-exe014.researchlumc.nl 
+Hello world from process 002 out of 032, processor name res-hpc-exe013.researchlumc.nl 
+Hello world from process 025 out of 032, processor name res-hpc-exe014.researchlumc.nl 
+Hello world from process 008 out of 032, processor name res-hpc-exe013.researchlumc.nl 
+Hello world from process 026 out of 032, processor name res-hpc-exe014.researchlumc.nl 
+Hello world from process 028 out of 032, processor name res-hpc-exe014.researchlumc.nl 
+Hello world from process 009 out of 032, processor name res-hpc-exe013.researchlumc.nl 
+salloc: Relinquishing job allocation 270
+```
 
 ### Submitting jobs