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Browse Prior Art Database

Partitioning N-Way Systems

IP.com Disclosure Number: IPCOM000009514D
Publication Date: 2002-Aug-28
Document File: 3 page(s) / 187K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method that can split one n-way system into smaller partitions, or merge multiple partitions into one larger system, while the original operating system (OS) continues to run without shutting down (see Figure 1). The disclosed method is a standardized, scalable solution that works across OS generations.

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Partitioning N-Way Systems

Disclosed is a method that can split one n-way system into smaller partitions, or merge multiple partitions into one larger system, while the original operating system (OS) continues to run without shutting down (see Figure 1). The disclosed method is a standardized, scalable solution that works across OS generations.

General Description

In order to dynamically partition a system, the running OS must be notified of the OS visible components being removed. That is, the processors, memory, and IO components being removed much be identified to the running OS. The dynamic partitioning request is fielded by the server management processor, which in turn communicates the request via hardware to the platform. The request is converted into a hot remove request for the SNC (i.e. processor and memory) and a hot offline request for the SIOH (i.e. all IO components attached to the targeted SIOH). Once the requests compute and IO elements are taken offline from the running system, the scalability switch is reprogrammed to partition the system (see Figures 2 and 3).

A dynamic merge consists of first shutting down one of the systems and introducing the now free resources (processor, memory, IO) to the other running system without stopping the system. The request to merge is once again handled by the server management system which first performs a shutdown of the targeted side. After reprogramming the SPS registers for a 8way system, the free system resources are...