Low latency, high bandwidth data communications between compute nodes in a parallel computer
Abstract
Methods, systems, and products are disclosed for data transfers between nodes in a parallel computer that include: receiving, by an origin DMA on an origin node, a buffer identifier for a buffer containing data for transfer to a target node; sending, by the origin DMA to the target node, a RTS message; transferring, by the origin DMA, a data portion to the target node using a memory FIFO operation that specifies one end of the buffer from which to begin transferring the data; receiving, by the origin DMA, an acknowledgement of the RTS message from the target node; and transferring, by the origin DMA in response to receiving the acknowledgement, any remaining data portion to the target node using a direct put operation that specifies the other end of the buffer from which to begin transferring the data, including initiating the direct put operation without invoking an origin processing core.
- Inventors:
- Issue Date:
- Research Org.:
- International Business Machines Corporation (Armonk, NY)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1086680
- Patent Number(s):
- 8,478,834
- Application Number:
- 11/776,718
- Assignee:
- International Business Machines Corporation (Armonk, NY)
- DOE Contract Number:
- B554331
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 97 MATHEMATICS AND COMPUTING
Citation Formats
Blocksome, Michael A. Low latency, high bandwidth data communications between compute nodes in a parallel computer. United States: N. p., 2013.
Web.
Blocksome, Michael A. Low latency, high bandwidth data communications between compute nodes in a parallel computer. United States.
Blocksome, Michael A. Tue .
"Low latency, high bandwidth data communications between compute nodes in a parallel computer". United States. https://www.osti.gov/servlets/purl/1086680.
@article{osti_1086680,
title = {Low latency, high bandwidth data communications between compute nodes in a parallel computer},
author = {Blocksome, Michael A},
abstractNote = {Methods, systems, and products are disclosed for data transfers between nodes in a parallel computer that include: receiving, by an origin DMA on an origin node, a buffer identifier for a buffer containing data for transfer to a target node; sending, by the origin DMA to the target node, a RTS message; transferring, by the origin DMA, a data portion to the target node using a memory FIFO operation that specifies one end of the buffer from which to begin transferring the data; receiving, by the origin DMA, an acknowledgement of the RTS message from the target node; and transferring, by the origin DMA in response to receiving the acknowledgement, any remaining data portion to the target node using a direct put operation that specifies the other end of the buffer from which to begin transferring the data, including initiating the direct put operation without invoking an origin processing core.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {7}
}