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Title: Performing a local barrier operation

Abstract

Performing a local barrier operation with parallel tasks executing on a compute node including, for each task: retrieving a present value of a counter; calculating, in dependence upon the present value of the counter and a total number of tasks performing the local barrier operation, a base value, the base value representing the counter's value prior to any task joining the local barrier; calculating, in dependence upon the base value and the total number of tasks performing the local barrier operation, a target value of the counter, the target value representing the counter's value when all tasks have joined the local barrier; joining the local barrier, including atomically incrementing the value of the counter; and repetitively, until the present value of the counter is no less than the target value of the counter: retrieving the present value of the counter and determining whether the present value equals the target value.

Inventors:
; ; ;
Publication Date:
Research Org.:
International Business Machines Corporation, Armonk, NY, USA
Sponsoring Org.:
USDOE
OSTI Identifier:
1126873
Patent Number(s):
8,667,502
Application Number:
13/683,616
Assignee:
International Business Machines Corporation (Armonk, NY) OSTI
DOE Contract Number:  
B554331
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING

Citation Formats

Archer, Charles J, Blocksome, Michael A, Ratterman, Joseph D, and Smith, Brian E. Performing a local barrier operation. United States: N. p., 2014. Web.
Archer, Charles J, Blocksome, Michael A, Ratterman, Joseph D, & Smith, Brian E. Performing a local barrier operation. United States.
Archer, Charles J, Blocksome, Michael A, Ratterman, Joseph D, and Smith, Brian E. Tue . "Performing a local barrier operation". United States. https://www.osti.gov/servlets/purl/1126873.
@article{osti_1126873,
title = {Performing a local barrier operation},
author = {Archer, Charles J and Blocksome, Michael A and Ratterman, Joseph D and Smith, Brian E},
abstractNote = {Performing a local barrier operation with parallel tasks executing on a compute node including, for each task: retrieving a present value of a counter; calculating, in dependence upon the present value of the counter and a total number of tasks performing the local barrier operation, a base value, the base value representing the counter's value prior to any task joining the local barrier; calculating, in dependence upon the base value and the total number of tasks performing the local barrier operation, a target value of the counter, the target value representing the counter's value when all tasks have joined the local barrier; joining the local barrier, including atomically incrementing the value of the counter; and repetitively, until the present value of the counter is no less than the target value of the counter: retrieving the present value of the counter and determining whether the present value equals the target value.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {3}
}

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