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Title: Mechanism of supporting sub-communicator collectives with O(64) counters as opposed to one counter for each sub-communicator

Abstract

A system and method for enhancing barrier collective synchronization on a computer system comprises a computer system including a data storage device. The computer system includes a program stored in the data storage device and steps of the program being executed by a processor. The system includes providing a plurality of communicators for storing state information for a bather algorithm. Each communicator designates a master core in a multi-processor environment of the computer system. The system allocates or designates one counter for each of a plurality of threads. The system configures a table with a number of entries equal to the maximum number of threads. The system sets a table entry with an ID associated with a communicator when a process thread initiates a collective. The system determines an allocated or designated counter by searching entries in the table.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
International Business Machines Corporation (Armonk, NY)
Sponsoring Org.:
USDOE
OSTI Identifier:
1092900
Patent Number(s):
8,527,740
Application Number:
12/697,164
Assignee:
International Business Machines Corporation (Armonk, NY)
DOE Contract Number:  
B554331
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING

Citation Formats

Kumar, Sameer, Mamidala, Amith R., Ratterman, Joseph D., Blocksome, Michael, and Miller, Douglas. Mechanism of supporting sub-communicator collectives with O(64) counters as opposed to one counter for each sub-communicator. United States: N. p., 2013. Web.
Kumar, Sameer, Mamidala, Amith R., Ratterman, Joseph D., Blocksome, Michael, & Miller, Douglas. Mechanism of supporting sub-communicator collectives with O(64) counters as opposed to one counter for each sub-communicator. United States.
Kumar, Sameer, Mamidala, Amith R., Ratterman, Joseph D., Blocksome, Michael, and Miller, Douglas. Tue . "Mechanism of supporting sub-communicator collectives with O(64) counters as opposed to one counter for each sub-communicator". United States. https://www.osti.gov/servlets/purl/1092900.
@article{osti_1092900,
title = {Mechanism of supporting sub-communicator collectives with O(64) counters as opposed to one counter for each sub-communicator},
author = {Kumar, Sameer and Mamidala, Amith R. and Ratterman, Joseph D. and Blocksome, Michael and Miller, Douglas},
abstractNote = {A system and method for enhancing barrier collective synchronization on a computer system comprises a computer system including a data storage device. The computer system includes a program stored in the data storage device and steps of the program being executed by a processor. The system includes providing a plurality of communicators for storing state information for a bather algorithm. Each communicator designates a master core in a multi-processor environment of the computer system. The system allocates or designates one counter for each of a plurality of threads. The system configures a table with a number of entries equal to the maximum number of threads. The system sets a table entry with an ID associated with a communicator when a process thread initiates a collective. The system determines an allocated or designated counter by searching entries in the table.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {9}
}

Patent:

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