Compilation and execution of a program (Fortran)

inlinetoc

The program SommeVecVecSEQ.f90 makes the sum of the two vectors A and B. The result is put in C.

Definition of the environment :

• definition of the environment :

module avail 

module load GCC/7.2.0 

• checking the compiler version

gfortran --version
GNU Fortran (GCC) 7.2.0
Copyright (C) 2017 Free Software Foundation, Inc. 

Compilation :

gfortran -o SommeVecVecSEQ.exe SommeVecVecSEQ.f90 

The binary file (executable) SommeVecVecSEQ.f90.exe has been generated.

./SommeVecVecSEQ.exe

The result is displayed on the screen :

Les deux vecteurs :

A =            1           2           3           4           5           6           7           8          9          10

B =            9           8           7           6           5           4           3           2          1           0

Le vecteur somme :

C =           10          10          10          10          10          10          10          10         10          10

We use a submission script batch.sh] to submit the job on compute clusters.

It is the submission script that configures the environment and then calls your binary (with its options, if any) on the execution node.

SGE → batch.csh → binaire

qsub batch.csh
Your job 335982 ("SommeVecVecSEQ") has been submitted
qstat

job-ID  prior   name             user         state submit/start at     queue                  slots ja-task-ID 
-----------------------------------------------------------------------------------------------------------------
 335982 0.00000 SommeVecVecSEQ   ccalugar     qw    02/14/2018 10:37:46

qstat

job-ID  prior   name             user         state submit/start at     queue                  slots ja-task-ID 
-----------------------------------------------------------------------------------------------------------------
 335982 0.07300 SommeVecVecSEQ   ccalugar     r    02/14/2018 10:38:54  E5_test@c8220node145         1 

• The output of the screen (standard output) is redirected to the file SommeVecVecSEQ.o335982
• The error output (standard error) is redirected to the file SommeVecVecSEQ.e335982

cat SommeVecVecSEQ.o335982

Les deux vecteurs :
A =            1           2           3           4           5           6           7           8           9          10
B =            9           8           7           6           5           4           3           2           1           0
Le vecteur somme :
C =           10          10          10          10          10          10          10          10          10          10