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Title: Message communications of particular message types between compute nodes using DMA shadow buffers

Abstract

Message communications of particular message types between compute nodes using DMA shadow buffers includes: receiving a buffer identifier specifying an application buffer having a message of a particular type for transmission to a target compute node through a network; selecting one of a plurality of shadow buffers for a DMA engine on the compute node for storing the message, each shadow buffer corresponding to a slot of an injection FIFO buffer maintained by the DMA engine; storing the message in the selected shadow buffer; creating a data descriptor for the message stored in the selected shadow buffer; injecting the data descriptor into the slot of the injection FIFO buffer corresponding to the selected shadow buffer; selecting the data descriptor from the injection FIFO buffer; and transmitting the message specified by the selected data descriptor through the data communications network to the target compute node.

Inventors:
 [1];  [1]
  1. Rochester, MN
Publication Date:
Research Org.:
International Business Machines Corporation (Armonk, NY)
Sponsoring Org.:
USDOE
OSTI Identifier:
1017445
Patent Number(s):
7,836,143
Application Number:
11/739,948
Assignee:
International Business Machines Corporation (Armonk, NY)
DOE Contract Number:  
B55433
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Blocksome, Michael A, and Parker, Jeffrey J. Message communications of particular message types between compute nodes using DMA shadow buffers. United States: N. p., 2010. Web.
Blocksome, Michael A, & Parker, Jeffrey J. Message communications of particular message types between compute nodes using DMA shadow buffers. United States.
Blocksome, Michael A, and Parker, Jeffrey J. Tue . "Message communications of particular message types between compute nodes using DMA shadow buffers". United States. https://www.osti.gov/servlets/purl/1017445.
@article{osti_1017445,
title = {Message communications of particular message types between compute nodes using DMA shadow buffers},
author = {Blocksome, Michael A and Parker, Jeffrey J},
abstractNote = {Message communications of particular message types between compute nodes using DMA shadow buffers includes: receiving a buffer identifier specifying an application buffer having a message of a particular type for transmission to a target compute node through a network; selecting one of a plurality of shadow buffers for a DMA engine on the compute node for storing the message, each shadow buffer corresponding to a slot of an injection FIFO buffer maintained by the DMA engine; storing the message in the selected shadow buffer; creating a data descriptor for the message stored in the selected shadow buffer; injecting the data descriptor into the slot of the injection FIFO buffer corresponding to the selected shadow buffer; selecting the data descriptor from the injection FIFO buffer; and transmitting the message specified by the selected data descriptor through the data communications network to the target compute node.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {11}
}

Patent:

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