Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Fencing direct memory access data transfers in a parallel active messaging interface of a parallel computer

Patent ·
OSTI ID:1092898
;

Fencing direct memory access (`DMA`) data transfers in a parallel active messaging interface (`PAMI`) of a parallel computer, the PAMI including data communications endpoints, each endpoint including specifications of a client, a context, and a task, the endpoints coupled for data communications through the PAMI and through DMA controllers operatively coupled to segments of shared random access memory through which the DMA controllers deliver data communications deterministically, including initiating execution through the PAMI of an ordered sequence of active DMA instructions for DMA data transfers between two endpoints, effecting deterministic DMA data transfers through a DMA controller and a segment of shared memory; and executing through the PAMI, with no FENCE accounting for DMA data transfers, an active FENCE instruction, the FENCE instruction completing execution only after completion of all DMA instructions initiated prior to execution of the FENCE instruction for DMA data transfers between the two endpoints.

Research Organization:
International Business Machines Corporation (Armonk, NY)
Sponsoring Organization:
USDOE
Assignee:
International Business Machines Corporation (Armonk, NY)
Patent Number(s):
8,527,672
Application Number:
12/940,300
OSTI ID:
1092898
Country of Publication:
United States
Language:
English

References (4)

A task migration implementation of the Message-Passing Interface conference January 1996
A message passing interface for parallel and distributed computing
  • Hariri, S.; Park, J. B.; Yu, F. -K.
  • [1993] The 2nd International Symposium on High Performance Distributed Computing, [1993] Proceedings The 2nd International Symposium on High Performance Distributed Computing https://doi.org/10.1109/HPDC.1993.263854
conference January 1993
Managing Multiple Communication Methods in High-Performance Networked Computing Systems journal January 1997
Parallel netCDF: A High-Performance Scientific I/O Interface conference November 2003

Similar Records

Related Subjects

97 MATHEMATICS AND COMPUTING