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Collective network routing

a network routing and collection technology, applied in the field of high-speed digital data processing systems, can solve the problems of limited network scalability to the maximum number of addresses, and inability to use the entire network again, so as to avoid the use of addresses and avoid their associated limitations

Inactive Publication Date: 2006-10-12
IBM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a method and system for routing data packets in a computer network with multiple nodes and links. It avoids using addresses and allows for detailed specification of packet behavior on a per-node basis. The system can handle a large number of packets and can be applied to different network topologies. It also allows for global packet reductions and other collective operations. Overall, the invention provides improved efficiency and flexibility for routing data packets in multi-node computer networks.

Problems solved by technology

The drawback of using addresses as part of the packet attributes is the limitation of the network scalability to the maximal number of addresses presentable with the bits dedicated to the packet address.
A broken root-node, router and / or links, will render the entire network useless since no packets can be routed from the left to the right partition.
If this link is broken, the entire network is also not functional anymore.

Method used

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Examples

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Embodiment Construction

[0028] The herein described invention solves the problem to describe packet routes of single packets and to define packet collectives for collective packet operations among a plurality of nodes connected by a network with arbitrary topology of degree n as shown at 10 in FIG. 1. Each node 12 itself comprises the network interface and the local client, which contains the processing elements for data processing of the received data and for injecting results of the local computation into the network.

[0029] The general structure of the network interface with four links, for a network of degree four, is also shown in FIG. 2. Each network link comprises a network receiver 14, which receives packets from the network link and presents the packets to the arbiter 16, which routes the packets, via sender 20, towards the targets specified using the collective class routing method herein described. The network interface also includes a local client CPU and memory, represented at 22.

[0030] In pa...

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Abstract

Disclosed are a unified method and apparatus to classify, route, and process injected data packets into a network so as to belong to a plurality of logical networks, each implementing a specific flow of data on top of a common physical network. The method allows to locally identify collectives of packets for local processing, such as the computation of the sum, difference, maximum, minimum, or other logical operations among the identified packet collective. Packets are injected together with a class-attribute and an opcode attribute. Network routers, employing the described method, use the packet attributes to look-up the class-specific route information from a local route table, which contains the local incoming and outgoing directions as part of the specifically implemented global data flow of the particular virtual network.

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of Provisional Application No. 60 / 625,026, for “Collective Network Routing,” filed Nov. 4, 2004.GOVERNMENT CONTRACT [0002] This invention was made with Government support under Subcontract B517552 under prime contract W-7405-ENG-48 awarded by The Department of Energy. The Government has certain rights in this invention.BACKGROUND OF THE INVENTION [0003] 1. Field of the Invention [0004] This invention generally relates to the field of high-speed digital data processing systems; and more specifically, the invention relates to methods and systems for routing messages in computer systems. [0005] 2. Background Art [0006] Massively parallel computer systems comprise a large number of data processing elements, which are typically connected using a network. Each node connected to the said network typically is comprised of a network interface and the local data processing elements. The network interface receiv...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04L12/28H04L45/74
CPCH04L45/00H04L45/54H04L45/302
Inventor HOENICKE, DIRK
Owner IBM CORP
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