Ada:Batch Job Files
Contents
Job files
While not the only method of submitted programs to be executed, job files fulfill the needs of most users.
The general idea behind job files follows:
- Make resource requests
- Add your commands and/or scripting
- Submit the job to the batch system
Basic Job Specifications
Several of the most important options are described below. These basic options are typically all that is needed to run a job on Ada.
| Specification | Option | Example | Example-Purpose |
|---|---|---|---|
| Job Name | -J [SomeText] | -J MyJob1 | Set the job name to "MyJob1" |
| Shell | -L [Shell] | -L | Uses specified Unix Shell to initialize the job's execution environment. |
| Wall Clock Limit | -W [hh:mm] | -W 1:15 | Set wall clock limit to 1 hour 15 min |
| Core count | -n ## | -n 20 | Assigns 20 job slots/cores. |
| Cores per node | -R "span[ptile=##]" | -R "span[ptile=5]" | Request 5 cores per node. |
| Memory Per Core | -M [MB] | -M 2560 | Sets the per process memory limit to 2560 mega-bytes (MBs). |
| Memory Per Core | -R "rusage[mem=[MB]]" | -R "rusage[mem=2560]" | Schedules job on nodes that have at least 2560 MBs available per core. |
| Combined stdout and stderr | -o [OutputName].%j | -o stdout1.%j | Collect stdout/err in stdout.[JobID] |
Optional Job Specifications
A variety of optional specifications are available to customize your job. The table below lists the specifications which are most useful for users of Ada.
| Specification | Option | Example | Example-Purpose |
|---|---|---|---|
| Set Allocation | -P ###### | -P 274839 | Set allocation to charge to 274839 |
| Email Notification I | -u [email-address] | -u howdy@tamu.edu | Send emails to howdy@tamu.edu. |
| Email Notification II | N] | -B -N | Send email on beginning (-B) and end (-N) of job. |
| Specify Queue | -q [queue] | -q xlarge | Request only nodes in xlarge subset. |
| Exclusive Node Usage | -x | Assigns a whole node exclusively for the job. |
Clarification on Memory, Core, and Node Specifications
Memory Specifications are IMPORTANT.
For examples on calculating memory, core, and/or node specifications on Ada: Specification Clarification.
