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When using qsub to put array jobs on a cluster the global variable SGE_TASK_ID gets set to the array job ID. I use this in a shell script that I run on a cluster, where each array job needs to do something different based on the SGE_TASK_ID. Is this a common way for cluster schedulers to do this, or do they all have a different approach?
Most schedulers have a way to do this, although it can be slightly different in different setups. In TORQUE the variable is called $PBS_ARRAYID but it works the same.