IRIDIS2 Simulation Manual

Preparation:

1. Register on the web page http://www.soton.ac.uk/iss/computing/hpc/iridis/webform.html

   It takes approximately one day before your account is activated .

2. Once you have an IRIDIS account go to your directory ~/.ssh/
3. Execute the command
   

    > ssh-keygen -t dsa -b 2048 -f iridis-key 

   It will ask you twice for a pass-phrase. Just press return both times.

4. You should have now two files in your directory: 'iridis-key' and 'iridis2-key.pub'
5. Copy the public key to iridis using
   

    > scp -p iridis-key.pub  <your iridis id>@iridis2.soton.ac.uk:~/.ssh/authorized_keys 

To configure your simulations

1. Get simulation folder template from here.
2. Untar and install as follows
   

    > tar -xvzf comms-sims.tgz
    > cd comms-sims; install.sh <your iridis id> 

3. Enter sim-template

    > cd sim-template	

4. Edit the Makefile

• Set ID to the name you want to give to your simulation batch (e.g. sim-template)

• Set EXEC to the name of the executable (e.g. conv.run)

• Change the simulation parameter in cfgs section of the Makefile. The way it currently is set, it will generate 8 configuration files if you type

   > make cfg 

• If you type now

   > make sim 

  it will generate 4 submission scripts (*.sim).

Note: you can type

 > make cfg
 > make sim 

for testing purpose but it is not necessay in the simulations later. It is done by the Makefile automatically

Start simulations

1. Clean the simulation directory by executing

    > make cleanall 

2. To start the simulations type

    > make dats 

3. To check the status of your simulations

    > make qstat 

4. Once your simulations have finished

    > make getdats 

   to transfer the data back

Additional usefull commands

1. Kill all your jobs on Iridis

    > ir-killall 

2. Delete a single job

    > ir-qdel <job id> 

3. Show complete queue on Iridis

    > ir-showq 

4. Show status of submitted jobs

    > ir-qstat