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NetWork Working Group 25 January 1971
Request for Comments: 90 R. T. BRADEN
NIC 5707
CCN as a network service center
(RFC90 - CCN As a network service center)
table of Contents
A. Introduction 1
C. Operating System 2
D. User Software 2
E. Remote Work Services 3
F. Quick batch subsystem 3
G. Special Event 4
H. Network Service 4
I. Reference Bibliography 5
Introduction
Campus computer network at CCN, California Los Angeles, soon, as a service center type host
Received an ARPA network. The purpose of this RFC is to depict hardware and software in the CCN and our plan to provide the network master.
The service of the machine. These services are selected in their specific site (RAND), and this service is selected.
Click to use CCN through the network. We welcome requests and comments from other sites.
B. CCN hardware
CCN runs on an IBM 360 / 91kk, for example,
A 91-type CPU with four million bytes.
CPU speed is highly dependent on the program; 2-6 MIPS, general 3
MIPS. When performing internal loop floating point operations, the upper limit of this range will be reached; 360 machine decimal operations
Exemption from 91 explanation.
Memory speed
Memory is 16-bit cross-large-capacity buffer, effective access time is 600ns,
Low 2 million bytes; 900ns, high 200,000 bytes.
I / O configuration a) 6 2860 selector channel.
b) 1 2870
New to multiplexer (with 16 control unit RPQ).
c) 5 2314
Disk storage units (such as 40 disk storage).
D) 1 2301
Miller drums (only system resident and catalogs).
e) 5 (245X)
9 Tape Drive (800DPI)
f) 3 (240x)
7 Tape Drive (800DPI)
g) 1 2291
(Modified 250CRT) Maintenance Console.
The multiplexed channels located on the CCN are:
h) 2 card readers and 4 high speed printers.
i) Provide 4 40,000 baud interfaces for the CCI2-style TV display console.
j) 6 data communication port (3 dial @ 2000 baud, 1 dedicated @ 4800
And 2 dedicated @ 50,000 bapers for remote login terminals.
K) a Calcomp plotter.
l) A BBS TV computer interface (CULLER-FRIED system).
m) 10 dial ports for the 2741 typing terminal.
n) IMF interface.
C. Operating system
The 91 type runs on the OS / 360 provided by IBM, and is currently 18.6. This system contains a CCN
Developed a correction set for controlling the workflow. MVT is the implementation of the general processing model of multi-channel programming, although IBM
Nothing has not been used to explicitly point out. For example, the program is called a task in the MVT, and the derived primitive is called.
D. User Software
Handling program
CCN provides the following software:
a) commonly used Fortran compiler. (Fort G. Fort H.WATFOR);
b) PL / 1 (version 5) and PL / C
c) assembler g;
d) IBM algol f;
e) IBM connection compiler and fast kernel connection compiler written on CCN;
f) Various processors, including:
Cobol, SPI, XP7, Meta-5, Snobol, Lisp 1.5, AutoFlow
SIMScript
1. 5, Mix (Knuth's Student Machine), CSMP, GPSS, ECAP,
APT, PMS, Matlan, Symap, SPSS, AND THE BMD
SERIES}
g) IBM file routine, sort and rpg.
2. Interactive system
a) URSA is based on the number of text-based display console (IBM2260 and CCI
CC301 Console) session remote task login system. URSA provides some other services, including "Desktop Calculator",
Interactive / Interpret assembler, operating system for handling file system online service programs and operators of CCN to MVT
interface. USR is not interacting with a type of type because it is designed to display "instant" display each time at least 480 characters.
b) APL
It is a known version number of the interactive system software product of IBM. Only IBM is only supported
2741 (SELECTRIC typewriter terminal).
c) OLMF
The implementation of the UCLA of the Culler-Fried system; it is almost the same as the language of the UCSX system.
d) TSO
The IBM universal very multiple subsystem under MVT, and sometimes used on CCS for 71 years. TSO supports 2741 and electric transmission
Machine (he will support the CCI console) on the CCN). TSO remembers CTSS in terms of capabilities and command lines.
E. Remote Work Services
RJS (Remote Work Service) is a subsystem written by CCN, which communicates through dialing and leased lines.
Thus remote batch terminals. Remote Batch Terminals By a set of record devices (one or more card readers, printers,
Punching machine). These devices are driven by a hardware controller or a small CPU (e.g., an IBM 20 or 1130).
A remote work service user inputs the OS / 360 task to the remote card reader with JCL; the task enters the operation in spooling
The system is machined at the system run, then the output of the printing and / or punching mode is sent back to the remote terminal - ie task
The initiator (unless the user or operator reroutes this output). The remote terminal may also contain a console typewriter.
To make the remote operator to receive and send packets and control it through its terminal.
F. Quick batch subsystem
The CCN has written a fast batch subsystem called Quickrun, which is used for small, medium batch tasks to provide "instant" back.
Transfer time, the central task is usually university computing center. QuickRun approves a very firm task control language
(QCL), no OS / 360
The versatility of JCL. QuickRun is a real batch subsystem, which is essentially as a MVT internal task
get on. Because it lacks uniformity, the system overhead caused by the subsystem is far less than the general system batch. It is reflected
The overhead of each task within QuickRun. Quickrun can read the self-service card on RJS and CCN
The machine is used on the remote batch terminal.
G. Special matters
1. Provide memory for batch tasks
To make CCNs can easily implement batch tasks require up to 3 million bytes, despite more than 600K bytes of tasks
The main runtime does not work properly.
2. disk space.
CCN provides a large amount of permanent disk space for permanent files. The configuration of the resident disk space includes:
The user source program of 220M bytes (8 disk groups) is used by URSA.
170 User Target Program and Load Unit (Binary) of Hetero (6 Disk Group)
His documents.
100M's own limited time storage (N days, N is satisfactory is 7 <= n <0). This space is charged, about 5s / thousand
Bytes / month.
In the future, we have to expand this online space, achieved by using the third-generation tape storage system. In addition, batch treatment
Tasks may always require users to install their disk groups, allowing a large private file to collect.
3. price
The cost of batch is based on T (CPU time), I (I / O request quantity) and R (memory size). The current price list can be obtained from the following
Get:
Mr. Kenneth Tom
User Relations Supervisor
UCLA
Campus Computing Network
Math sciences addition
Los Angeles, California 90024
Generally speaking, CCN
The 91-type overhead is very attractive. For the calculation amount, the floating point calculation is heavy, the scope of calculation is particularly required.
want.
H. Network Service
CCN will provide RJS, URSA, and (or even) TSO services to the network. Each has its own line 3 protocol. In addition, will
A "transparent" Layer 3 protocol appears to allow the user to run in the batch of batch and TSO, running on the CCN.
Thus directly with network communication
Layer 3 Agreement - Plan implementation - as follows:
NetRJS
It is the name of the 3rd floor protocol. Through this] protocol, the user process on the remote host will simulate a RJS connected to the CCN.
The remote batch terminal on the system. In this way, NETRJS will allow users to submit all batch work to 360/91, and then
To the print and punching output stream returned from the network. NETRJS has been detailed by RFC # 88 and will be achieved in March 71.
2.etncrt
This protocol allows network users to simulate a CCI document display console to use CCN's URSA system or even TSO.
The initial version of ETNCRT will not be circulated as RFC.
3. Nettrans
Allows the user process on the CCN to communicate "Transfer" protocols through the network. He has not yet been specified.
4. This protocol allows the actual or simulated 2741 to use TSO (Most Herd APL) over the network.
I. Reference book
1. "IBM System / 360 Model 91 Functional
Characteristics ". IBM Form A22-6907.
2. "An Implementation of MVT". CCN Technical Report
TR-1 (August, 169).
3. for more information, see ccn users' manual.
4. "APL / 360 PRIMER". IBM Form GH20-0689.
5. "Planning for TS0". IBM Form GC28-6698.
6. "Remote Job Service". CCN TECHNICAL REPORT TR-2
(Undated).
This article is filed by Robert Lamothe
Put into the machine, make people convenient landing to RFC reading] RFC90 - CCN AS A Network Service Center CCN as Network Service Center
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