The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 21, 2002
Filed:
Oct. 29, 1998
Kalman Zvi Meth, Netanya, IL;
Anton Prenneis, Highland, NY (US);
Adnan M. Agbaria, Musmus, IL;
Patrick Francis Caffrey, Glasco, NY (US);
William Joseph Ferrante, Hyde Park, NY (US);
Su-Hsuan Huang, Fishkill, NY (US);
Demetrios K. Michailaros, Lake Katrine, NY (US);
William Gole Tuel, Jr., Kingston, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A checkpoint of a parallel program is taken in order to provide a consistent state of the program in the event the program is to be restarted. Each process of the parallel program is responsible for taking its own checkpoint, however, the timing of when the checkpoint is to be taken by each process is the responsibility of a coordinating process. During the checkpointing, various data is written to a checkpoint file. This data includes, for instance, in-transit message data, a data section, file offsets, signal state, executable information, stack contents and register contents. The checkpoint file can be stored either in local or global storage. When it is stored in global storage, migration of the program is facilitated. When a parallel program is to be restarted, each process of the program initiates its own restart. The restart logic restores the process to the state at which the checkpoint was taken.