Methods and systems for reconstructing the state of a...

G - Physics – 06 – F

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G06F 9/45 (2006.01) G06F 11/14 (2006.01) G06F 11/34 (2006.01)

Patent

CA 2240347

Methods and systems for running and checkpointing parallel and distributed applications which does not require modification to the programs used in the system nor changes to the underlying operating system. One embodiment of the invention includes the following general steps: starting an application on a parallel processing system (40), controlling processes for the application, including recording of commands and responses (41, 42, 43), controlling a commit protocol (44), detecting failures of the application (45, 46), continuing execution of the application from the most recently committed transaction after "replaying" the recorded commands and responses (47).

La présente invention concerne des procédés et des systèmes permettant d'exécuter et de gérer par points de reprise des applications parallèles et distribuées, sans que cela ne nécessite ni modification des programmes utilisés dans le système ni modification du système d'exploitation sur lequel repose le fonctionnement du système. Une réalisation de l'invention rassemble les opérations générales suivantes: lancement d'une application sur un système à traitement parallèle (40), gestion des processus destinés à l'application, y compris l'enregistrement des commandes et réponses (41, 42, 43), gestion d'un protocole de points de consolidation (44), détection des incidents au niveau de l'application (45, 46), poursuite de l'exécution de l'application à partir de la transaction ayant le plus récemment fait l'objet d'une prise de point de consolidation après ré-exécution des commandes et réponses enregistrées (47).

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