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When a batch job is started, a number of variables are introduced into the job's environment that can be used by the batch script in making decisions, creating output files, and so forth. These variables are listed in the following table:
| Variable | Description |
|---|---|
| PBS_JOBNAME | User specified jobname |
| PBS_ARRAYID | Zero-based value of job array index for this job (in version 2.2.0 and later) |
| PBS_GPUFILE |
Line-delimited list of GPUs allocated to the job located in $TORQUE_HOME/aux/jobidgpu. Each line follows the following format: <host>-gpu<number> For example, myhost-gpu1. |
| PBS_O_WORKDIR | Job's submission directory |
| PBS_ENVIRONMENT | N/A |
| PBS_TASKNUM | Number of tasks requested |
| PBS_O_HOME | Home directory of submitting user |
| PBS_MOMPORT | Active port for MOM daemon |
| PBS_O_LOGNAME | Name of submitting user |
| PBS_O_LANG | Language variable for job |
| PBS_JOBCOOKIE | Job cookie |
| PBS_JOBID | Unique pbs job id |
| PBS_NODENUM | Node offset number |
| PBS_NUM_NODES | Number of nodes allocated to the job |
| PBS_NUM_PPN | Number of procs per node allocated to the job |
| PBS_O_SHELL | Script shell |
| PBS_O_HOST | Host on which job script is currently running |
| PBS_QUEUE | Job queue |
| PBS_NODEFILE | File containing line delimited list of nodes allocated to the job |
| PBS_NP | Number of execution slots (cores) for the job |
| PBS_O_PATH | Path variable used to locate executables within job script |
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