What happens when you use the wrong compiler version

Weird errors.  Check out this DSXchange post.

One customer installed the latest xlC C++ 13.1 compiler on version DataStage 11.3, but 11.3 only supports compiler version 12.1.  What happened?

• Smaller jobs ran fine; larger jobs aborted without helpful error messages in the log
• When the larger jobs were broken down to smaller individual jobs, the jobs completed successfully
• The dumps were indicating memory errors

Once the compiler was downgraded to the supported 12.1 version, the larger jobs completed successfully.

Be sure to check the system requirements!