DOC: Add intent of parameter sweep example for #1

README.md

@@ -119,3 +119,28 @@ Completed SLURM job 2339009 in   00:00:04
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 ```
+
+### Example 3: Parameter Sweep
+
+A parameter sweep is running the same program with combinations of
+input parameters.
+
+This example is nearly the same as the previous example, but instead
+of using the the task ID as the input, it uses a long list of record
+IDs.  The record ID is read by the program to find the corresponding
+input parameters, and saves the result.
+
+Results are saved into a directory and, once all records are
+completed, the results are aggregated into a single results file.
+
+GNU Parallel automatically feeds record IDs to task workers as the
+task workers complete records and become available.
+
+```sh
+# From the command-line
+cd ~/parallel-slurm/examples
+rm -f joblog submit.out
+for i in {1..5}; do sbatch 03-submit-param-sweep.slurm; done
+touch submit.out && tail -f submit.out
+# Hit Ctrl+C to exit
+```