Direct memory access transfer completion notification
Abstract
DMA transfer completion notification includes: inserting, by an origin DMA engine on an origin node in an injection first-in-first-out (`FIFO`) buffer, a data descriptor for an application message to be transferred to a target node on behalf of an application on the origin node; inserting, by the origin DMA engine, a completion notification descriptor in the injection FIFO buffer after the data descriptor for the message, the completion notification descriptor specifying a packet header for a completion notification packet; transferring, by the origin DMA engine to the target node, the message in dependence upon the data descriptor; sending, by the origin DMA engine, the completion notification packet to a local reception FIFO buffer using a local memory FIFO transfer operation; and notifying, by the origin DMA engine, the application that transfer of the message is complete in response to receiving the completion notification packet in the local reception FIFO buffer.
- Inventors:
-
- Rochester, MN
- Issue Date:
- Research Org.:
- International Business Machines Corp., Armonk, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1018034
- Patent Number(s):
- 7890670
- Application Number:
- 11/746,348
- 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
- Resource Relation:
- Patent File Date: 2007 May 09
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 97 MATHEMATICS AND COMPUTING
Citation Formats
Archer, Charles J, Blocksome, Michael A, and Parker, Jeffrey J. Direct memory access transfer completion notification. United States: N. p., 2011.
Web.
Archer, Charles J, Blocksome, Michael A, & Parker, Jeffrey J. Direct memory access transfer completion notification. United States.
Archer, Charles J, Blocksome, Michael A, and Parker, Jeffrey J. Tue .
"Direct memory access transfer completion notification". United States. https://www.osti.gov/servlets/purl/1018034.
@article{osti_1018034,
title = {Direct memory access transfer completion notification},
author = {Archer, Charles J and Blocksome, Michael A and Parker, Jeffrey J},
abstractNote = {DMA transfer completion notification includes: inserting, by an origin DMA engine on an origin node in an injection first-in-first-out (`FIFO`) buffer, a data descriptor for an application message to be transferred to a target node on behalf of an application on the origin node; inserting, by the origin DMA engine, a completion notification descriptor in the injection FIFO buffer after the data descriptor for the message, the completion notification descriptor specifying a packet header for a completion notification packet; transferring, by the origin DMA engine to the target node, the message in dependence upon the data descriptor; sending, by the origin DMA engine, the completion notification packet to a local reception FIFO buffer using a local memory FIFO transfer operation; and notifying, by the origin DMA engine, the application that transfer of the message is complete in response to receiving the completion notification packet in the local reception FIFO buffer.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 15 00:00:00 EST 2011},
month = {Tue Feb 15 00:00:00 EST 2011}
}
Works referenced in this record:
The Blue Gene/L Supercomputer: A Hardware and Software Story
journal, May 2007
- Moreira, José E.; Salapura, Valentina; Almasi, George
- International Journal of Parallel Programming, Vol. 35, Issue 3, p. 181-206