scholarly journals On the Algorithmic Aspects of Using OpenMP Synchronization Mechanisms II: User-Guided Speculative Locks

2015 ◽  
pp. 133-148 ◽  
Author(s):  
Barna L. Bihari ◽  
Hansang Bae ◽  
James Cownie ◽  
Michael Klemm ◽  
Christian Terboven ◽  
...  
Keyword(s):  
Synchronization Mechanisms

Protecting Synchronization Mechanisms of Parallel Big Data Kernels via Logging

2021 ◽  
pp. 1-1
Author(s):  
Travis Lecompte ◽  
Lu Peng ◽  
Xu Yuan ◽  
Nian-Feng Tzeng
Keyword(s):  
Big Data ◽  
Synchronization Mechanisms

scholarly journals Synchronization Mechanisms for Multi-User and Multi-Device Hybrid Broadcast and Broadband Distributed Scenarios

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 605-624
Author(s):  
Dani Marfil ◽  
Fernando Boronat ◽  
Almanzor Sapena ◽  
Anna Vidal
Keyword(s):  
Synchronization Mechanisms

OSPF and IS-IS Synchronization Mechanisms

2019 ◽  
pp. 179-233
Author(s):  
Rui Valadas
Keyword(s):  
Synchronization Mechanisms

Bursting in Inhibitory Interneuronal Networks: A Role for Gap-Junctional Coupling

1999 ◽  
Vol 81 (3) ◽  
pp. 1274-1283 ◽  
Author(s):  
F. K. Skinner ◽  
L. Zhang ◽  
J. L. Perez Velazquez ◽  
P. L. Carlen
Keyword(s):  
Theoretical Work ◽  
Oscillatory Behavior ◽  
Minimal Network ◽  
Junctional Coupling ◽  
Synchronization Mechanisms ◽  
The Individual ◽  
Gap Junctional ◽  
Gap Junctional Coupling ◽  
Inhibitory Networks

Bursting in inhibitory interneuronal networks: a role for gap-junctional coupling. Much work now emphasizes the concept that interneuronal networks play critical roles in generating synchronized, oscillatory behavior. Experimental work has shown that functional inhibitory networks alone can produce synchronized activity, and theoretical work has demonstrated how synchrony could occur in mutually inhibitory networks. Even though gap junctions are known to exist between interneurons, their role is far from clear. We present a mechanism by which synchronized bursting can be produced in a minimal network of mutually inhibitory and gap-junctionally coupled neurons. The bursting relies on the presence of persistent sodium and slowly inactivating potassium currents in the individual neurons. Both GABAA inhibitory currents and gap-junctional coupling are required for stable bursting behavior to be obtained. Typically, the role of gap-junctional coupling is focused on synchronization mechanisms. However, these results suggest that a possible role of gap-junctional coupling may lie in the generation and stabilization of bursting oscillatory behavior.

scholarly journals Implementation of the asynchronous signals reception method with the direct sequence spread spectrum

2020 ◽  
Vol 30 (2) ◽  
pp. 49-54
Author(s):  
I. V. Egorov ◽  
D. V. Gaivoronskii
Keyword(s):  
Spread Spectrum ◽  
Communication Systems ◽  
Block Diagram ◽  
Random Sequence ◽  
Direct Sequence Spread Spectrum ◽  
Practical Implementation ◽  
Direct Sequence ◽  
Radio Communication ◽  
Radio Stations ◽  
Synchronization Mechanisms

The physical and logical organization of most existing communication systems provides for additional options (transmission of known preambles, the presence of an additional synchronization channel) that simplify synchronization. At the same time, in the practical implementation of radio communication systems, it is necessary to solve the problems of developing additional synchronization mechanisms that can reduce the time it takes to synchronize to reduce energy consumption and increase channel capacity. Thus, the existing problem of the asynchrony of the generators of physically remote radio stations is relevant. One of the possible solutions is asynchronous signal reception with the direct sequence spread spectrum. It allows converting the original binary signal into a pseudo-random sequence for modulating the carrier. The current article is devoted to the characterization of this method and has the following items presented: the transmitter and receiver block diagram, sufficient to explain the proposed method; methods for compensating for effects arising from the asynchrony of the transmitter and receiver generators. Since synchronization is generated according to the correlation peaks that correspond to the data bits, it is possible to set the frequency of the chips on the transmitter to jitter artificially and supplement the pseudo-random sequence with several random chips, which complicates the unauthorized detection of the transmitted signal.

Parallel Data Transfer Protocol

2013 ◽  
pp. 238-255 ◽  
Author(s):  
Yushi Shen ◽  
Yale Li ◽  
Ling Wu ◽  
Shaofeng Liu ◽  
Qian Wen
Keyword(s):  
Optical Networks ◽  
Packet Loss ◽  
Large Scale ◽  
Data Transfer ◽  
Current Data ◽  
Packet Losses ◽  
Multiple Flows ◽  
Data Transfer Protocol ◽  
Display Walls ◽  
Synchronization Mechanisms

Transferring very high quality digital objects over the optical network is critical in many scientific applications, including video streaming/conferencing, remote rendering on tiled display walls, 3D virtual reality, and so on. Current data transfer protocols rely on the User Datagram Protocol (UDP) as well as a variety of compression techniques. However, none of the protocols scale well to the parallel model of transferring large scale graphical data. The existing parallel streaming protocols have limited synchronization mechanisms to synchronize the streams efficiently, and therefore, are prone to slowdowns caused by significant packet loss of just one stream. In this chapter, the authors propose a new parallel streaming protocol that can stream synchronized multiple flows of media content over optical networks through Cross-Stream packet coding, which not only can tolerate random UDP packet losses but can also aim to tolerate unevenly distributed packet loss patterns across multiple streams to achieve a synchronized throughput with reasonable coding overhead. They have simulated the approach, and the results show that the approach can generate steady throughput with fluctuating data streams of different data loss patterns and can transfer data in parallel at a higher speed than multiple independent UDP streams.

Isochronous Distributed Multimedia Synchronization

2005 ◽  
pp. 1679-1684
Author(s):  
Zhonghua Yang ◽  
Yanyan Yang ◽  
Yaolin Gu ◽  
Robert Gay
Keyword(s):  
Multimedia Systems ◽  
Multimedia System ◽  
Distributed Environments ◽  
Spatial Relationships ◽  
Multimedia Synchronization ◽  
Temporal Relationships ◽  
Key Issues ◽  
Computer Controlled ◽  
Synchronization Mechanisms ◽  
Media Data

A multimedia system is characterized by the integrated computer-controlled generation, manipulation, presentation, storage, and communication of independent discrete and continuous media data. The presentation of any data and the synchronization between various kinds of media data are the key issues for this integration (Georganas, Steinmetz, & Nakagawa, 1996). Clearly, multimedia systems have to precisely coordinate the relationships among all media that include temporal and spatial relationships. Temporal relationships are the presentation schedule of media, and spatial relationships are the location arrangements of media. Multimedia synchronization is a process of maintaining these relationships by employing appropriate synchronization mechanisms and algorithms. Multimedia synchronization is traditionally challenging, especially in distributed environments.

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