Browse Prior Art Database

Managing Serial Use Resources in a Distributed Data Processing System Using an Insertion Ring

IP.com Disclosure Number: IPCOM000034808D
Original Publication Date: 1989-Apr-01
Included in the Prior Art Database: 2005-Jan-27
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Hall, WD: AUTHOR [+2]

Abstract

This article describes a technique which insures that users of serial facilities in a distributed data processing system (DDP) system are properly sequenced. In a DDP system, such as the one disclosed in [*], where serial use facilities, such as system printers, have been attached as stand- alone nodes in an insertion ring, a set of orders is defined to allow the shared use of these resources without requiring the invocation of a central manager located in some processor node. A Request Session order is transmitted to the desired facility with a Session Granted response being required before any work will be accepted. A Session Busy response will be an indication that the requestor has been queued.

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Managing Serial Use Resources in a Distributed Data Processing System Using an Insertion Ring

This article describes a technique which insures that users of serial facilities in a distributed data processing system (DDP) system are properly sequenced. In a DDP system, such as the one disclosed in [*], where serial use facilities, such as system printers, have been attached as stand- alone nodes in an insertion ring, a set of orders is defined to allow the shared use of these resources without requiring the invocation of a central manager located in some processor node. A Request Session order is transmitted to the desired facility with a Session Granted response being required before any work will be accepted. A Session Busy response will be an indication that the requestor has been queued. When the facility becomes free, a Session Granted frame will be sent to the node which is next in the queue with the highest priority. Reference * "Local Insertion Bidirectional Ring Architecture," IBM Technical Disclosure Bulletin, 31, 166-169 (November l988)

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