Batch/indirect operation

• Batch execution - start a job and then return immediately without waiting for the job to finish
  • >R CMD BATCH input.q output.txt #objects are saved automatically
  • >Splus BATCH input.q output.txt
• Indirect execution - useful for running several jobs in series; starts a job and waits for it to finish
  • >R --{save,no-save} <input.q >output.txt # R requires that you specify save or no-save with regard to the objects created
  • >Splus <input.q >output.txt
• Are my objects saved during these operations?
  In Splus, your objects are saved. In fact, you can use the .Data or .Data.hp directory in the interim, and you can even have it open when the remote jobs finish, and I think Splus is smart about still saving the objects from the remote operation, though you should check this to be sure. In R, if you do the indirect execution, you have to specify whether the objects should be saved.