[Gate-users] How to obtain independent sinogram outputs from simultaneous jobs, efficiently?

[Arda Konik]

How can I obtain independent sinogram outputs from simultaneous jobs?
Since I use sinogram output, cluster tools don't work for me.

Following Dirk Kruecker ' s post   (  http://lists.healthgrid.org/archives/gate-users/2005-June/000815.html) 
,
this is how I run  2  jobs (same macro) simultaneously on my 2-core  
laptop:

I open 2 terminals and enter,
1) Gate a.mac
2) Gate b.mac
where a.mac and b.mac are identical macros except the lines in b.mac:
/gate/output/root/setSaveRndmFlag 0
  /random/resetEngineFrom/  StartSeq(1).rndm

but  obviously this is very tedious if i am going to run many jobs,  
say 40, in a cluster...
Has anyone have better solution for this?
Thanks,

Arda Konik
University of Iowa