Scalable single system image operating software architecture...

G - Physics – 06 – F

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G06F 9/00 (2006.01) G06F 9/46 (2006.01) G06F 9/50 (2006.01)

Patent

CA 2317132

A scalable single system image ("S3I") operating system architecture for a multi-processing computer system having separate service (16) and computational (18) processors and wherein a unique distinction exists between the processors but both have shared, common access to all of the computer system memory. The computational processors have no input/output ("I/O") devices mapped directly onto them while the service processors have full I/O capability. A single operating system software image presents a single system application programming interface to application programs across all of the processors and a communication mechanism between the computational and service processors allows multiple requests to the service processors and fast, asynchronous interrupt responses to each request. A computational scheduler executes on each computational processor and provides the interface to the service processors where the operating system software executes.

L'invention porte sur une architecture dilatable de système d'exploitation, fournissant une présentation unifiée du système (S3I), et destinée à des systèmes informatiques multiprocesseurs à processeurs de service (16) et de calcul (18) séparés et différents, mais ayant tous un accès partagé à la totalité de la mémoire du système informatique. Les processeurs de calcul ne possèdent pas de dispositifs d'E/S à correspondance directe, tandis que les processeurs de service ont une entière capacité d'E/S. La présentation unifiée du logiciel du système d'exploitation constitue la seule interface avec les programmes d'application des divers processeurs, tandis que le mécanisme de communication entre les processeurs de service et de calcul permet d'adresser des demandes multiples aux processeurs de service et d'obtenir des réponses d'interruption rapides et asynchrones à chacune d'elles. Un ordonnanceur de calcul intervenant sur chacun des processeurs de calcul sert d'interface avec les processeurs de service où le logiciel du système d'exploitation exécute un programme.

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