Plots undersized when matlab is run using SGE

Tapovan reported that matlab was producing tiny plots when run under qsub in SGE, even though he has specified a size. Based on a meeting with Pat & Pierre the following tests/fixes were devised

1. Try not specifying a size. Pat seemed to recall having better luck (i.e. larger plots) with default Matlab plots under qsub that specifying a size.
2. Test running Matlab in background without using SGE
1. on front end
2. on a compute node
3. If the non-SGE backgrounding works, see if can set-up a script that mimics non-SGE backgrounding for SGE submitted runs
4. Reinstall compute nodes with graphics added
5. Run interactive sessions on compute nodes to make plots (least favorable alternative)