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Title: Improving efficiency of a global barrier operation in a parallel computer

Performing a global barrier operation in a parallel computer that includes compute nodes coupled for data communications, where each compute node executes tasks, with one task on each compute node designated as a master task, including: for each task on each compute node until all master tasks have joined a global barrier: determining whether the task is a master task; if the task is not a master task, joining a single local barrier; if the task is a master task, joining the global barrier and the single local barrier only after all other tasks on the compute node have joined the single local barrier.
Publication Date:
OSTI Identifier:
1327915
Report Number(s):
9,459,934
13/683,726
DOE Contract Number:
B554331
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 Nov 21
Research Org:
International Business Machines Corporation, Armonk, NY (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING