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:
-
- Rochester, MN
- Issue Date:
- Research Org.:
- International Business Machines Corp., Armonk, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1017445
- Patent Number(s):
- 7836143
- Application Number:
- 11/739,948
- Assignee:
- International Business Machines Corporation (Armonk, NY)
- Patent Classifications (CPCs):
-
G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING
H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04L - TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- 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}
}