Difference between In Process and Inter Process - DataStage

What is the difference between In Process and Inter Process?

In-process:

-The performance of Data Stage jobs can be improved by turning in-process row buffering on followed by job recompilation.

-Data from connected active stages is passed through buffers instead of passing row by row.

Inter-process:

-Inter process is used when SMP parallel system runs server jobs

-Inter process enables running separate process for every active stage

-Every process will utilize a separate process while running blocks.