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Title: Chaining direct memory access data transfer operations for compute nodes in a parallel computer

Abstract

Methods, systems, and products are disclosed for chaining DMA data transfer operations for compute nodes in a parallel computer that include: receiving, by an origin DMA engine on an origin node in an origin injection FIFO buffer for the origin DMA engine, a RGET data descriptor specifying a DMA transfer operation data descriptor on the origin node and a second RGET data descriptor on the origin node, the second RGET data descriptor specifying a target RGET data descriptor on the target node, the target RGET data descriptor specifying an additional DMA transfer operation data descriptor on the origin node; creating, by the origin DMA engine, an RGET packet in dependence upon the RGET data descriptor, the RGET packet containing the DMA transfer operation data descriptor and the second RGET data descriptor; and transferring, by the origin DMA engine to a target DMA engine on the target node, the RGET packet.

Inventors:
 [1];  [1]
  1. Rochester, MN
Issue Date:
Research Org.:
International Business Machines Corp., Armonk, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1015777
Patent Number(s):
7805546
Application Number:
11/829,325
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

Citation Formats

Archer, Charles J, and Blocksome, Michael A. Chaining direct memory access data transfer operations for compute nodes in a parallel computer. United States: N. p., 2010. Web.
Archer, Charles J, & Blocksome, Michael A. Chaining direct memory access data transfer operations for compute nodes in a parallel computer. United States.
Archer, Charles J, and Blocksome, Michael A. Tue . "Chaining direct memory access data transfer operations for compute nodes in a parallel computer". United States. https://www.osti.gov/servlets/purl/1015777.
@article{osti_1015777,
title = {Chaining direct memory access data transfer operations for compute nodes in a parallel computer},
author = {Archer, Charles J and Blocksome, Michael A},
abstractNote = {Methods, systems, and products are disclosed for chaining DMA data transfer operations for compute nodes in a parallel computer that include: receiving, by an origin DMA engine on an origin node in an origin injection FIFO buffer for the origin DMA engine, a RGET data descriptor specifying a DMA transfer operation data descriptor on the origin node and a second RGET data descriptor on the origin node, the second RGET data descriptor specifying a target RGET data descriptor on the target node, the target RGET data descriptor specifying an additional DMA transfer operation data descriptor on the origin node; creating, by the origin DMA engine, an RGET packet in dependence upon the RGET data descriptor, the RGET packet containing the DMA transfer operation data descriptor and the second RGET data descriptor; and transferring, by the origin DMA engine to a target DMA engine on the target node, the RGET packet.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {9}
}

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