gtpm6m0fMain Supervisor Reference

Supporting a Tightly Coupled System

A TPF tightly coupled processing system consists of main storage, one copy of the TPF system, a Central Processing Complex (CPC), and a channel subsystem. A CPC is a configuration that contains one or more processors or instruction streams (I-streams). The I-streams within the CPC share main storage. TPF uses the term I-stream interchangeably with processor.

TPF tightly coupled support is designed to provide the image of one single, very fast uniprocessor. There is only one copy of the TPF system executing on a CPC regardless of the number of I-streams that CPC contains.

A detailed description of the TPF system tightly coupled support can be found in TPF Concepts and Structures.