Communication performance analysis of Scalable Coherent Interface

2011 ◽  
Author(s):  
Zhang Jiandong ◽  
Pang Min ◽  
Wu Yong ◽  
Shi Guoqing
Keyword(s):  
Performance Analysis ◽  
Communication Performance ◽  
Coherent Interface ◽  
Scalable Coherent Interface

scholarly journals Performance Analysis of Point-to-Point LoRa End Device Communication

2019 ◽  
pp. 140
Author(s):  
Yosefine Triwidyastuti
Keyword(s):  
Performance Analysis ◽  
Communication Technology ◽  
Communication Performance ◽  
Monitoring Applications ◽  
Point To Point

LoRa is an emerging communication technology that can be used in any field. Many types of research have analyzed LoRa network using a gateway and several end devices to many monitoring applications. However, the communication performance between LoRa end devices only has not been evaluated. This research tested a LoRa communication between two end devices in a point-to-point topology. From the experiment results with various payload lengths, the optimum payload is only 48 bytes with the default module configuration. Longer payload resulted in a decreased performance. Thus, this research implemented a waiting protocol that can increase the Packet Reception Ratio of 100-byte payload from 49.87% to 97.52%.  

K-PROCESSOR RELIABILITY OF LARGE-SCALE RING-BASED HIERARCHICAL INTERCONNECTIONS

2002 ◽  
Vol 09 (01) ◽  
pp. 61-77
Author(s):  
M. AL-ROUSAN ◽  
O. AL-JARRAH ◽  
M. MOWAFI
Keyword(s):  
Interconnection Networks ◽  
Large Scale ◽  
Network Reliability ◽  
Multiprocessor Systems ◽  
Hierarchical Systems ◽  
Hierarchical Networks ◽  
Coherent Interface ◽  
Large Acceptance ◽  
Ring Architecture ◽  
Scalable Coherent Interface

Recently, connecting thousands of processors via interconnection networks based on multiple (hierarchical) rings has an increased interest. This is due to the large acceptance and success of the Scalable Coherent Interface (SCI) technology. The inherently weak behavior of ring architecture has led interconnection designers to consider various choices to improve the overall network reliability. An interesting choice is to use braided rings instead of the single (basic) rings in the hierarchy. In this paper, we present new formulas for computing K-processor reliability of SCI ring-based hierarchical networks in the context of large-scale multiprocessor systems. The derived formulas are general and applicable to any given systems size consisting of an arbitrary number of levels. The reliability of hierarchical systems based on the basic and braided rings is evaluated and analyzed using the derived formulas. The results show that hierarchical systems based on braided rings significantly improve the reliability of hierarchies constructed of basic rings. The results are general and not limited to systems of SCI rings; the analysis is valid for any type of rings architecture such as token and slotted rings.

The Scalable Coherent Interface (SCI)

1996 ◽  
Vol 34 (8) ◽  
pp. 52-63 ◽  
Author(s):  
D.B. Gustavson ◽  
Qiang Li
Keyword(s):  
Coherent Interface ◽  
Scalable Coherent Interface
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