Determining when a set of compute nodes participating in a barrier operation on a parallel computer are ready to exit the barrier operation
Abstract
Methods, apparatus, and products are disclosed for determining when a set of compute nodes participating in a barrier operation on a parallel computer are ready to exit the barrier operation that includes, for each compute node in the set: initializing a barrier counter with no counter underflow interrupt; configuring, upon entering the barrier operation, the barrier counter with a value in dependence upon a number of compute nodes in the set; broadcasting, by a DMA engine on the compute node to each of the other compute nodes upon entering the barrier operation, a barrier control packet; receiving, by the DMA engine from each of the other compute nodes, a barrier control packet; modifying, by the DMA engine, the value for the barrier counter in dependence upon each of the received barrier control packets; exiting the barrier operation if the value for the barrier counter matches the exit value.
- Inventors:
-
- Rochester, MN
- Issue Date:
- Research Org.:
- International Business Machines Corp., Armonk, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1034158
- Patent Number(s):
- 8082424
- Application Number:
- 11/832,192
- Assignee:
- International Business Machines Corporation (Armonk, NY)
- Patent Classifications (CPCs):
-
G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING
- DOE Contract Number:
- B554331
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 97 MATHEMATICS AND COMPUTING
Citation Formats
Blocksome, Michael A. Determining when a set of compute nodes participating in a barrier operation on a parallel computer are ready to exit the barrier operation. United States: N. p., 2011.
Web.
Blocksome, Michael A. Determining when a set of compute nodes participating in a barrier operation on a parallel computer are ready to exit the barrier operation. United States.
Blocksome, Michael A. Tue .
"Determining when a set of compute nodes participating in a barrier operation on a parallel computer are ready to exit the barrier operation". United States. https://www.osti.gov/servlets/purl/1034158.
@article{osti_1034158,
title = {Determining when a set of compute nodes participating in a barrier operation on a parallel computer are ready to exit the barrier operation},
author = {Blocksome, Michael A},
abstractNote = {Methods, apparatus, and products are disclosed for determining when a set of compute nodes participating in a barrier operation on a parallel computer are ready to exit the barrier operation that includes, for each compute node in the set: initializing a barrier counter with no counter underflow interrupt; configuring, upon entering the barrier operation, the barrier counter with a value in dependence upon a number of compute nodes in the set; broadcasting, by a DMA engine on the compute node to each of the other compute nodes upon entering the barrier operation, a barrier control packet; receiving, by the DMA engine from each of the other compute nodes, a barrier control packet; modifying, by the DMA engine, the value for the barrier counter in dependence upon each of the received barrier control packets; exiting the barrier operation if the value for the barrier counter matches the exit value.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {12}
}
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