gtpm3m0aMulti-Processor Interconnect Facility Reference

Basic MPIF Terms

This section defines some basic MPIF terms. See TPF Library Guide for a complete list of definitions.

Connection
A session established between two users.

CNC
An ESCON channel attached to an ESCON capable device

CTC
A CTC link, whether a 3088 or an ESCON CTC

CPC
Central processing complex.

Path
The route of communication between two processors. This route, or circuit, consists of a pair of physical units on each side of the circuit. These physical units are part of the multichannel communications device being used. The pair of units provides simultaneous read and write operations across the circuit. On each side of the path, one unit is designated for reading data while the other unit is designated for writing data.

MPIF complex
Multiple TPF complexes that communicate using a CTC communication link.

MPIF user
System and support programs, that are run periodically, as part of TPF processing. Also referred to as a user.

TPF complex
A TPF loosely coupled complex or a CPC running TPF.

TPF loosely coupled complex
Two or more copies of TPF contained in two or more processors, sharing a single data base. Also referred to as a loosely coupled complex.

TPF system
A single copy of TPF. Also referred to as a system.

User
See MPIF user.

To help clarify these definitions, consider the following: