Browse Prior Art Database

Systems for Interprocess Communication in a Resource Sharing Computer Network (RFC0062)

IP.com Disclosure Number: IPCOM000003692D
Original Publication Date: 1970-Aug-03
Included in the Prior Art Database: 2000-Sep-13
Document File: 17 page(s) / 52K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D.C. Walden: AUTHOR

Abstract

If you are working to develop methods of communications within a computer network, you can engage in one of two activities. You can work with others, actually constructing a computer network, being influenced, perhaps influencing your colleagues. Or you can construct an intellectual position of how things should be done in an ideal network, one better than the one you are helping to construct, and then present this position for the designers of future networks to study. The author has spent the past two years engaged in the first activity. This paper results from recent engagement in the second activity.

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Network Working Group D. C. Walden

Request for Comments: 62 BBN Inc.

Supercedes NWG/RFC #61 3 August 1970

A System for Interprocess Communication

in a

Resource Sharing Computer Network

1. Introduction

If you are working to develop methods of communications within a

computer network, you can engage in one of two activities. You can

work with others, actually constructing a computer network, being

influenced, perhaps influencing your colleagues. Or you can

construct an intellectual position of how things should be done in an

ideal network, one better than the one you are helping to construct,

and then present this position for the designers of future networks

to study. The author has spent the past two years engaged in the

first activity. This paper results from recent engagement in the

second activity.

"A resource sharing computer network is defined to be a set of

autonomous, independent computer systems, interconnected so as to

permit each computer system to utilize all of the resources of the

other computer systems much as it would normally call a subroutine."

This definition of a network and the desirability of such a network

is expounded upon by Roberts and Wessler in [9].

The actual act of resource sharing can be performed in two ways: in

an ad hoc manner between all pairs of computer systems in the

network; or according to a systematic network-wide standard. This

paper develops one possible network-wide system for resource sharing.

I believe it is natural to think of resources as being associated

with processes<1> and available only through communication with these

processes. Therefore, I view the fundamental problem of resource

sharing to be the problem of interprocess communication. I also

share with Carr, Crocker, and Cerf [2] the view that interprocess

communication over a network is a subcase of general interprocess

communication in a multi-programmed environment.

These views have led me to perform a two-part study. First, a set of

operations enabling interprocess communication within a single time-

sharing system is constructed. This set of operations eschews many

of the interprocess communications techniques currently in use within

time-sharing systems -- such as communication through shared memory

-- and relies instead on techniques that can be easily generalized to

permit communication between remote processes. The second part of

the study presents such a gene...