Title: Direct access inter-process shared memory

Abstract

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.

Inventors:

Brightwell, Ronald B; Pedretti, Kevin; Hudson, Trammell B

Issue Date:

2013-10-22

Research Org.:

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1107593

Patent Number(s):

8566536

Application Number:

12/551,666

Assignee:

Sandia Corporation (Albuquerque, NM)

Patent Classifications (CPCs):

G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING

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G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING

G06F12/1009 - using page tables, e.g. page table structures
G06F12/1036 - for multiple virtual address spaces, e.g. segmentation
G06F12/109 - for multiple virtual address spaces, e.g. segmentation
G06F9/544 - {Buffers

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DOE Contract Number:  

AC04-94AL850(X)

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

97 MATHEMATICS AND COMPUTING