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Direct access inter-process shared memory

Patent ·
OSTI ID:1107593
; ;

A technique for directly sharing physical memory between processes executing on processor cores is described. The technique includes loading a plurality of processes into the physical memory for execution on a corresponding plurality of processor cores sharing the physical memory. An address space is mapped to each of the processes by populating a first entry in a top level virtual address table for each of the processes. The address space of each of the processes is cross-mapped into each of the processes by populating one or more subsequent entries of the top level virtual address table with the first entry in the top level virtual address table from other processes.

Research Organization:
SNL-A (Sandia National Laboratories, Albuquerque, NM (United States))
Sponsoring Organization:
USDOE
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
8,566,536
Application Number:
12/551,666
OSTI ID:
1107593
Country of Publication:
United States
Language:
English

References (8)

Designing an Efficient Kernel-Level and User-Level Hybrid Approach for MPI Intra-Node Communication on Multi-Core Systems conference September 2008
Cache-Efficient, Intranode, Large-Message MPI Communication with MPICH2-Nemesis conference September 2009
Implementation and evaluation of shared-memory communication and synchronization operations in MPICH2 using the Nemesis communication subsystem journal September 2007
Implementation and Shared-Memory Evaluation of MPICH2 over the Nemesis Communication Subsystem book January 2006
An Ultrahigh Performance MPI Implementation on SGI® ccNUMA Altix® Systems journal January 2006
LiMIC: Support for High-Performance MPI Intra-node Communication on Linux Cluster conference June 2005
Data Transfers between Processes in an SMP System: Performance Study and Application to MPI conference January 2006
Fbufs: a high-bandwidth cross-domain transfer facility journal December 1993

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97 MATHEMATICS AND COMPUTING