Changes between Version 49 and Version 50 of Public/User_Guide/Batch_system

Timestamp:

Sep 30, 2021, 10:55:29 AM (4 years ago)

Author:

Jochen Kreutz

Comment:

introductory example updated

Public/User_Guide/Batch_system

@@ -79 +79 @@
 === Running directly from the front ends ===
 
-You can run the application directly from the frontend, bypassing the shell:
-
-{{{
+You can run the application directly from the frontend, bypassing the shell. Do not forget to set the correct environment for running your executable on the login node as this will be used for execution with `srun`.
+
+{{{
+[kreutz1@deepv Temp]$ ml GCC/10.3.0 ParaStationMPI/5.4.9-1
 [kreutz1@deepv Temp]$ srun -A deep -p dp-cn -N 4 -n 8 -t 00:30:00 ./MPI_HelloWorld
 Hello World from rank 7 of 8 on dp-cn04
@@ -93 +94 @@
 }}}
 
-In this case, it can be useful to create an allocation which you can use for several runs of your job:
+It can be useful to create an allocation which you can be used for several runs of your job:
 
 {{{
@@ -117 +118 @@
 === Batch script ===
 
-Given the following script {{{hello_cluster.sh}}}:
+As stated above, it is recommended to load the necessary modules within the script and submit the script from a clean environment. 
+
+The following script {{{hello_cluster.sh}}} will unload all modules and load the modules required for executing the given binary:
 
 {{{
 #!/bin/bash
 
-#SBATCH --partition=dp-cn
+#SBATCH --partition=dp-esb
 #SBATCH -A deep
 #SBATCH -N 4
@@ -130 +133 @@
 #SBATCH --time=00:10:00
 
+ml purge
+ml GCC ParaStationMPI
 srun ./MPI_HelloWorld
 }}}
 
-This script requests 4 nodes with 8 tasks, specifies the stdout and stderr files, and asks for 10 minutes of walltime. Submit:
+This script requests 4 nodes of the ESB module with 8 tasks, specifies the stdout and stderr files, and asks for 10 minutes of walltime. 
+You can submit the job script as follows:
 
 {{{
@@ -140 +146 @@
 }}}
 
-Check what it's doing:
+... and check what it's doing:
 
 {{{
@@ -148 +154 @@
 }}}
 
-Check the result:
+Once finished, you can check the result (and the error file if needed)
 
 {{{
 [kreutz1@deepv Temp]$ cat /p/project/cdeep/kreutz1/hello_cluster-69264.out 
-Hello World from rank 6 of 8 on dp-cn04
-Hello World from rank 3 of 8 on dp-cn02
-Hello World from rank 0 of 8 on dp-cn01
-Hello World from rank 4 of 8 on dp-cn03
-Hello World from rank 2 of 8 on dp-cn02
-Hello World from rank 7 of 8 on dp-cn04
-Hello World from rank 5 of 8 on dp-cn03
-Hello World from rank 1 of 8 on dp-cn01
+Hello World from rank 7 of 8 on dp-esb37
+Hello World from rank 3 of 8 on dp-esb35
+Hello World from rank 5 of 8 on dp-esb36
+Hello World from rank 1 of 8 on dp-esb34
+Hello World from rank 6 of 8 on dp-esb37
+Hello World from rank 2 of 8 on dp-esb35
+Hello World from rank 4 of 8 on dp-esb36
+Hello World from rank 0 of 8 on dp-esb34
 }}}