Direct memory access transfer completion notification
Abstract
Methods, apparatus, and products are disclosed for DMA transfer completion notification that include: inserting, by an origin DMA engine on an origin compute node in an injection FIFO buffer, a data descriptor for an application message to be transferred to a target compute node on behalf of an application on the origin compute 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 an address of a completion notification field in application storage for the application; transferring, by the origin DMA engine to the target compute node, the message in dependence upon the data descriptor; and notifying, by the origin DMA engine, the application that the transfer of the message is complete, including performing a local direct put operation to store predesignated notification data at the address of the completion notification field.
- Inventors:
-
- Rochester, MN
- Issue Date:
- Research Org.:
- International Business Machines Corp., Armonk, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1013811
- Patent Number(s):
- 7779173
- Application Number:
- 11/754,719
- 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, Blocksome, Michael A, and Parker, Jeffrey J. Direct memory access transfer completion notification. United States: N. p., 2010.
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/1013811.
@article{osti_1013811,
title = {Direct memory access transfer completion notification},
author = {Archer, Charles J and Blocksome, Michael A and Parker, Jeffrey J},
abstractNote = {Methods, apparatus, and products are disclosed for DMA transfer completion notification that include: inserting, by an origin DMA engine on an origin compute node in an injection FIFO buffer, a data descriptor for an application message to be transferred to a target compute node on behalf of an application on the origin compute 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 an address of a completion notification field in application storage for the application; transferring, by the origin DMA engine to the target compute node, the message in dependence upon the data descriptor; and notifying, by the origin DMA engine, the application that the transfer of the message is complete, including performing a local direct put operation to store predesignated notification data at the address of the completion notification field.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 17 00:00:00 EDT 2010},
month = {Tue Aug 17 00:00:00 EDT 2010}
}