نتایج جستجو برای: remote memory

تعداد نتایج: 360003  

1999
Jarek Nieplocha Bryan Carpenter

This paper introduces a new portable communication library called ARMCI. ARMCI provides one-sided communication capabilities for distributed array libraries and compiler run-time systems. It supports remote memory copy, accumulate, and synchronization operations optimized for non-contiguous data transfers including strided and generalized UNIX I/O vector interfaces. The library has been employe...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2001
N Burgess S Becker J A King J O'Keefe

The computational role of the hippocampus in memory has been characterized as: (i) an index to disparate neocortical storage sites; (ii) a time-limited store supporting neocortical long-term memory; and (iii) a content-addressable associative memory. These ideas are reviewed and related to several general aspects of episodic memory, including the differences between episodic, recognition and se...

Journal: :Learning & memory 2016
Fanny Fuchs Karine Herbeaux Noémie Aufrere Christian Kelche Chantal Mathis Alexandra Barbelivien Monique Majchrzak

Exposure of rodents to a stimulating environment has beneficial effects on some cognitive functions that are impaired during physiological aging, and especially spatial reference memory. The present study investigated whether environmental enrichment rescues these functions in already declining subjects and/or protects them from subsequent decline. Subgroups of 17-mo-old female rats with unimpa...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2013
Kevin A Corcoran Katherine Leaderbrand Jelena Radulovic

As memories age, their processing increasingly relies upon cortical rather than hippocampal circuits, but the adaptive significance and mechanisms of this shift are not fully understood. Here we investigated the behavioral features and cortical mechanisms underlying extinction of remotely versus recently acquired context fear in mice. Behaviorally, extinction and reinstatement were similar, but...

Journal: :Concurrency - Practice and Experience 1993
Eliseu M. Chaves Prakash Das Thomas J. LeBlanc Brian D. Marsh Michael L. Scott

In the standard kernel organization on a bus-based multiprocessor, all processors share the code and data of the operating system; explicit synchronization is used to control access to kernel data structures. Distributed-memory multicomputers use an alternative approach, in which each instance of the kernel performs local operations directly and uses remote invocation to perform remote operatio...

2014
Muireann Irish Michael Hornberger Shadi El Wahsh Bonnie Y. K. Lam Suncica Lah Laurie Miller Sharpley Hsieh John R. Hodges Olivier Piguet

The capacity to remember self-referential past events relies on the integrity of a distributed neural network. Controversy exists, however, regarding the involvement of specific brain structures for the retrieval of recently experienced versus more distant events. Here, we explored how characteristic patterns of atrophy in neurodegenerative disorders differentially disrupt remote versus recent ...

Journal: :Memory & cognition 1996
C M Wharton K J Holyoak T E Lange

Remote analogical reminding is hypothesized to occur when one episode is cued by another sharing similar themes but not similar object, character, or event descriptions. We report three experiments exploring this view. Subjects' remindings in Experiment 1 showed sensitivity to remote analogical similarity even though targets were encoded only briefly in an incidental learning paradigm. Experime...

2003
Ahmad Afsahi Ying Qian

The interconnection networks and the communication system software in clusters of multiprocessors are critical to achieving high performance. Recently, Sun Microsystems has introduced a new system area network, Sun Fire Link interconnect, for its Sun Fire cluster systems with some performance results at the MPI level. Sun Fire Link is a memory-based interconnect with layered system software com...

2005
Jarek Nieplocha Doug Baxter Vinod Tipparaju Craig Edward Rasmussen Robert W. Numrich

Symmetric data objects have been introduced by Cray Inc. in context of SHMEM remote memory access communication on Cray T3D/E systems and later adopted by SGI for their Origin servers. Symmetric data objects greatly simplify parallel programming by allowing programmers to reference remote instance of a data structure by specifying address of the local counterpart. The current paper describes ho...

2001
Gary Liu Tarek S. Abdelrahman

This paper describes and evaluates a compiler transformation that improves the performance of parallel programs on Network-of-Workstation (NOW) sharedmemory multiprocessors. The transformation overlaps the communication time resulting form non-local memory accesses with the computation time in parallel loops to effectively hide the latency of the remote accesses. The transformation peels from a...

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