# Sample PBS submit script
# Name my job
#PBS -N HariSubmission
# Request 0 hours, 5 minutes, 0 seconds. 
#PBS -l walltime=00:05:00
# The output of stdout is sent to outputFile
#PBS -o outputFile
# The output of stderr is sent to errorFile
#PBS -e errorFile
# If the job fails, DO NOT rerun it
#PBS -r n
# Request 4 nodes, and 2 processors (out of available 4) in each node.
#PBS -l nodes=4:ppn=2
## Each comment starts with 2 of '#' and each directive to PBS starts with '#PBS' 

## Immediately after the lines containing the PBS directives, you will have to enter the commands you want executed. 
## Type in here the same statements that you would type as if you were executing them at the command line
		
## Let's have some sample commands
ls
hostname

## The output of the above commands would have been redirected to outputFile

## When your programs are executing, they will have access to certain environment variables that you will need
## to reference to. 
## The most important of all of them, and the only one we will need is PBS_NODEFILE
## Let's list the contents of that file
cat $PBS_NODEFILE
		
# If we are running an MPI program compiled with mpicc, execute the following
# mpirun -np Q -machinefile $PBS_NODEFILE name_of_executable
# The np argument mentions the number of processes to spawn, and this is generally the product of number of
# nodes you request and the processors per node you requester earlier. 
# The machinefile argument, $PBS_NODEFILE comes from the PBS environment, and it lists the machines that the PBS scheduler
# has assigned for your code. 

## Just to give the impression that we are ''computing'' for a while, let's ask the program to sleep for a short while
sleep 20
## This will give us time to test MAUI commands while our program is ''executing''