gtpm3m0a | Multi-Processor Interconnect Facility Reference |
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:
- A user exists in a TPF system.
- Multiple TPF systems exist in a TPF loosely coupled complex.
- Multiple TPF complexes exist in a MPIF complex.
- Multiple TPF complexes communicate using a CTC communication link.
- A path must be defined over which two users can communicate.
- A connection must be established to allow two users to communicate.