In general, after configuring and testing a case and before starting a long production job based on that case, it's important to verify that the model restarts exactly. This is a standard requirement of the system and will help demonstrate stability of the configuration technically. The tool create_production_test is located in the case directory, and it sets up an ERT two month exact restart test in a separate directory based on the current case. To use it, do the following

> ./create_production_test
> cd ../$CASE_ERT.$MACH
submit $CASE_ERT.$
Check your test results. A successful test produces "PASS" as
  the first word in the file, $CASE_ERT.$MACH/TestStatus

If the test fails, see the Section called Debugging Failed Tests for test debugging guidance.