MatLAB

MatLAB can be used interactively on the compute nodes with just three quick commands:

      $ qsub -I -l nodes=1
      $ module add matlab
      $ matlab

Running MatLAB interactively on a reserved compute node with graphical (that is, X11 windows output) is a two-stage process that requires two separate terminal sessions:

1. In the first terminal, login and reserve one or more nodes:

      ssh geojr.acesgrid.org
      qsub -I -l nodes=1
      ==> on this new node run "hostname" which will return something
          like "aE34-500-139"
   

2. In the second terminal, use a second ssh connection to login to the reserved node:

      ssh -Y geojr.acesgrid.org
      ssh -Y aE34-500-139      <===  this is the hostname from above
      module add matlab
      matlab -nojvm
   

Two versions are available:

• module add matlab
  This is the default MatLAB R14 (version 7.x)
  
  
• module add matlab/6r13
  This is the older MatLAB R13 (version 6.x)
  
  

And there are currently some restrictions:

• If you are not using ssh to froward your X connection then due to the network configuration, MatLAB can only be run in a non-graphical-display mode. This is equivalent to

            $ matlab -nojvm -nodisplay
  

  
  
• MatLAB in graphical mode will not work with the -nojvm option by itself. The modes that do appear to work are

            $ matlab
  
            $ matlab -nojvm -nojit
  
            $ matlab -nodesktop
  

  and we are working to upgrade the Linux kernel and/or MatLAB libraries to have the full functionality that people expect.
  
  
• The number of MatLAB licenses is finite. If there are insufficient licenses for your jobs, then please try:
  1. try using the free MatLAB-like (and largely MatLAB-compatible) octave environment which is installed on every node, the IA64 (Itanium) nodes for which no MatLAB version is available.
  2. and we'll try to work out a plan to purchase more licenses and/or help you use the MatLAB compiler which does not require runtime licenses.