Supercomputer

Configuration

As supercomputer nodes are connection restricted, the best way to enable the COMPSs Monitor is from the users local machine. To do so, please install the following packages in your local machine:

  • COMPSs (with at least the Monitor)

  • sshfs

For further details about the COMPSs packages installation and configuration please refer to ⚙️ Installation and Configuration Section.

Once the packages have been installed and configured, users need to mount the sshfs directory as follows. The SC_USER stands for your supercomputer’s user, the SC_ENDPOINT to the supercomputer’s public endpoint and the TARGET_LOCAL_FOLDER to the local folder where you wish to deploy the supercomputer files):

$ scp $HOME/.ssh/id_rsa.pub ${SC_USER}@mn1.bsc.es:~/id_rsa_local.pub
$ ssh SC_USER@SC_ENDPOINT \
      "cat ~/id_rsa_local.pub >> ~/.ssh/authorized_keys; \
      rm ~/id_rsa_local.pub"
$ mkdir -p TARGET_LOCAL_FOLDER/.COMPSs
$ sshfs -o IdentityFile=$HOME/.ssh/id_rsa -o allow_other \
      SC_USER@SC_ENDPOINT:~/.COMPSs \
      TARGET_LOCAL_FOLDER/.COMPSs

Whenever you wish to unmount the sshfs directory please run:

$ sudo umount TARGET_LOCAL_FOLDER/.COMPSs

Execution

Access the COMPSs Monitor through its webpage (http://localhost:8080/compss-monitor by default) and log in with the TARGET_LOCAL_FOLDER to enable the COMPSs Monitor for the Supercomputer.

Please, remember that to enable all the COMPSs Monitor features applications must be ran with the --log_level=debug and -m flags. For further details please check the Executing COMPSs applications Section.

Figure 24 illustrates how to login and Figure 25 shows the COMPSs Monitor main page for an application run inside a Supercomputer.

COMPSs Monitor login for Supercomputers

Figure 24 COMPSs Monitor login for Supercomputers

COMPSs Monitor main page for a test application at Supercomputers

Figure 25 COMPSs Monitor main page for a test application at Supercomputers