The Review of Cache Partitioning in Multi-Core Processor

2010 ◽  
Vol 439-440 ◽  
pp. 1223-1229
Author(s):  
Shuo Li ◽  
Gao Chao Xu ◽  
Yu Shuang Dong ◽  
Feng Wu
Keyword(s):  
System Performance ◽  
Optimal Performance ◽  
Chip Multiprocessor ◽  
Future Research ◽  
Multicore Processor ◽  
Cache Partitioning ◽  
Shared Cache ◽  
Microelectronics Technology ◽  
Multi Core Processor ◽  
Cache Pollution

With the development of microelectronics technology, Chip Multi-Processor (CMP) or multi-core design has become a mainstream choice for major microprocessor vendors. But in a chip-multiprocessor with a shared cache structure , the competing accesses from different applications degrade the system performance , resulting in non-optimal performance and non-predicting executing time. Cache partitioning techniques can exclusively partition the shared cache among multiple competing applications. In this paper, we first introduce the problems caused by Cache pollution in multicore processor structure; then present the different methods of Cache partitioning in multicore processor structure¬ －－categorizing them based on the different metrics. And finally, we discuss some possible directions for future research in the area.

Dynamic Partition of Shared Cache for Multi-Thread Application in Multi-Core System

2010 ◽  
Vol 439-440 ◽  
pp. 1587-1594
Author(s):  
Shuo Li ◽  
Feng Wu
Keyword(s):  
System Performance ◽  
Scientific Computing ◽  
Chip Multiprocessor ◽  
Core System ◽  
Cache Partitioning ◽  
Shared Cache ◽  
Rate Information ◽  
Partitioning Algorithm ◽  
Cache Partition

In a chip-multiprocessor with a shared cache structure , the competing accesses from different applications degrade the system performance.The accesses degrade the performance and result in non-predicting executing time. Cache partitioning techniques can exclusively partition the shared cache among multiple competing applications. In this paper, the authors design the framework of Process priority-based Multithread Cache Partitioning(PP-MCP),a dynamic shared cache partitioning mechanism to improve the performance of multi-threaded multi-programmed workloads. The framework includes a miss rate monitor , called Application-oriented Miss Rate Monitor (AMRM) , which dynamically collect s miss rate information of multiple multi-threaded applications on different cache partitions , and process priority-based weighted cache partitioning algorithm ,which extends traditional miss rate oriented cache partition algorithms.The algorithm allocates Cache in sequence of the value of the process priority and it ensures that the highest priority process will get enough Cache space; and the applications with more threads tend to get more shared cache in order to improve t he overall system performance. Experiments show that PP-MCP has better IPC throughput and weighted speedup. Specifically , for multi-threaded multi-programmed scientific computing workloads , PP-MCP-1 improves throughput by up to 20% and on average 10 % over PP-MCP-0.

scholarly journals A Partially Shared Thin Reconfigurable Array For Multicore Processor

2019 ◽  
Author(s):  
Francisco Carlos Junior ◽  
Ivan Silva ◽  
Ricardo Jacobi
Keyword(s):  
System Performance ◽  
Considerable Increase ◽  
Energy Savings ◽  
Reconfigurable Architecture ◽  
Reconfigurable Architectures ◽  
Multicore Processor ◽  
Reconfigurable Arrays ◽  
Reconfigurable Array ◽  
Multi Core Processor ◽  
The Way

Reconfigurable architectures have been widely used as single core processor accelerators. In the multi-core era, however, it is necessary to review the way that reconfigurable arrays are integrated into multi-core processor. Generally, a set of reconfigurable functional units are employed in a similar way as they are used in single core processors. Unfortunately, a considerable increase in the area ensues from this practice. Besides, in applications with unbalanced workload in their threads this approach can lead to a inefficient use of the reconfigurable architecture in cores with a low or even idle workload. To cope with this issue, this work proposes and evaluates a partially shared thin reconfigurable array, which allows to share reconfigurable resources among the processor's cores. Sharing is performed dynamically by the configuration scheduler hardware. The results shows that the sharing mechanism provided 76% of energy savings, improving the performance 41% in average when compared with a version without the proposed reconfigurable array. A comparison with a version of the reconfigurable array without the sharing mechanism was performed and shows that the sharing mechanism improved up to 11.16% in the system performance.

scholarly journals Complex System Governance as a Framework for Asset Management

2021 ◽  
Vol 13 (15) ◽  
pp. 8502
Author(s):  
Polinpapilinho F. Katina ◽  
James C. Pyne ◽  
Charles B. Keating ◽  
Dragan Komljenovic
Keyword(s):  
Complex System ◽  
Performance Improvement ◽  
Asset Management ◽  
System Performance ◽  
Future Research ◽  
Complex Organizations ◽  
Potential Relationship ◽  
Structured Approach

Complex system governance (CSG) is an emerging field encompassing a framework for system performance improvement through the purposeful design, execution, and evolution of essential metasystem functions. The goal of this study was to understand how the domain of asset management (AsM) can leverage the capabilities of CSG. AsM emerged from engineering as a structured approach to organizing complex organizations to realize the value of assets while balancing performance, risks, costs, and other opportunities. However, there remains a scarcity of literature discussing the potential relationship between AsM and CSG. To initiate the closure of this gap, this research reviews the basics of AsM and the methods associated with realizing the value of assets. Then, the basics of CSG are provided along with how CSG might be leveraged to support AsM. We conclude the research with the implications for AsM and suggested future research.

Research on the Impact of Shadow on the Performance of Building Photovoltaic System

2014 ◽  
Vol 694 ◽  
pp. 163-168
Author(s):  
Liang Guo ◽  
Yun Liang ◽  
Xu Zhang ◽  
Xiao Tian Yang
Keyword(s):  
System Performance ◽  
Rapid Development ◽  
Photovoltaic System ◽  
Future Research ◽  
Photovoltaic Module ◽  
Pv Module ◽  
New Energy ◽  
Generation Capacity ◽  
The Impact ◽  
Support Cost

With the rapid development of world economy, the energy crisis has become one of the urgent problems to be solved. Photovoltaic technology is a green new energy industry, no pollution is widely used all over the world. Typically, for photovoltaic component installation, only considering the utilization of components support cost and area, and the arrangement of components have not given enough attention. Photovoltaic module in use process will inevitably encounter the shadow, the shadow changes to make appropriate adjustments to the PV module arrangement can enhance the power generation capacity. Effect of the shadow on the photovoltaic system performance can be effectively used for photovoltaic component to bring help, is of positive significance. This study analyzed the villa model typical, and the rectangular shadow is modeling, in order to analyze the influence on the photovoltaic component. Through the conclusion of this study can determine the horizontal and vertical components of photovoltaic components which caused little damage, and provide a reference for future research of shadow and photovoltaic system performance.

scholarly journals Engaging citizens in the co-production of a health system performance assessment framework: a case study in Ireland

2021 ◽  
Author(s):  
Óscar Brito Fernandes ◽  
Erica Barbazza ◽  
Damir Ivanković ◽  
Tessa Jansen ◽  
Niek Klazinga ◽  
...  
Keyword(s):  
Health System ◽  
Performance Assessment ◽  
Performance Measures ◽  
System Performance ◽  
Professional Associations ◽  
Third Party ◽  
Added Value ◽  
Future Research ◽  
Health System Performance ◽  
Health System Performance Assessment

Abstract Background The launch in 2017 of the Irish 10-year reform programme Sláintecare represents a key commitment in the future of the health system. An important component of the programme was the development of a health system performance assessment (HSPA) framework. In 2019, the Department of Health of Ireland (DoH) and Health Service Executive (HSE) commissioned the technical support of researchers to develop an outcome-oriented HSPA framework, which should reflect the shared priorities of multiple stakeholders, including citizens. This study describes the method applied in the Irish context and reflects on the added value of using a citizen panel in the co-production of an HSPA framework. Methods A panel of 15 citizens was convened, recruited by a third-party company using a sampling strategy to achieve a balanced mix representing the Irish society. Panelists received lay-language preparatory materials prior to the meeting. Panelists used a three-color scheme to signal the inclusion and importance of performance measures. An exit questionnaire was administered to understand how participants experienced being part of the panel. The citizen panel was the first in a series of three panels towards the development of the HSPA framework, followed by panels including representatives of the DoH and HSE, and representatives from professional associations and special interest groups. Results The citizen panel generated 249 health performance measures ranging across 13 domains. Domains assessed as the most important included people-centeredness, coordination of care, and coverage. Prioritization of domains differed between panels. Citizen panelists shared a similar understanding of what a citizen panel involves and described their experience at the panel as enjoyable, interesting, and informative. Conclusions The engagement of citizens early on in the co-production process of the HSPA framework shaped the processes that followed, with the restating of priorities of the citizen panel informing decision-making throughout. Citizen engagement in HSPA development is essential for realizing value-based people-centered health systems and assuring an inclusive process that helps to generate trust and ownership of performance intelligence. Future research could expand on how citizen panels could be further engaged in co-creating mechanisms to assess, monitor, and report on the performance of health care systems.

Application of Coded Modulation for Physical-Layer Network Coding

2015 ◽  
Vol 713-715 ◽  
pp. 1068-1072
Author(s):  
Quan Sheng Yuan ◽  
Yong Jiang Hu ◽  
Chang Long Wang ◽  
Zhi Min Yang
Keyword(s):  
Network Coding ◽  
System Performance ◽  
Transmission Rate ◽  
Physical Layer ◽  
Coded Modulation ◽  
System Throughput ◽  
Future Research ◽  
Physical Layer Network Coding ◽  
Communication System Performance ◽  
Inter Communication

It has been proved that Physical-layer Network Coding (PNC) can boost the system throughput obviously and decrease the error rate by reducing the time slots of inter-communication,which makes signal processing efficient and reliable.Coded Modulation (CM) considers coding and modulation as a whole,which makes coding and modulation effective without decreasing system transmission rate ,to guarantee bandwith efficiency.In this paper,the basic idea of the CM and its implementation are introduced.We analyze the effect of the combination of CM and PNC for communication system performance,which provide the foundation for future research.

scholarly journals Multi core processor for QR decomposition based on FPGA

2018 ◽  
Vol 7 (4) ◽  
pp. 2100
Author(s):  
Safaa S. Omran ◽  
Ahmed K. Abdul-abbas
Keyword(s):  
High Throughput ◽  
Hardware Design ◽  
Qr Decomposition ◽  
Low Latency ◽  
Multicore Processor ◽  
Orthogonal Matrices ◽  
Triangular Matrices ◽  
Upper Triangular Matrices ◽  
Givens Rotation ◽  
Multi Core Processor

Hardware design of multicore 32-bits processor is implemented to achieve low latency and high throughput QR decomposition (QRD) based on two algorithms which they are Gram Schmidt (GS) and Givens Rotation (GR). The orthogonal matrices are computed using the first core processor by Gram Schmidt algorithm, and the upper triangular matrices are computed using the second core processor by Givens Rotation algorithm. This design of multicore processor can achieve 50M QRD/s throughput for (4 × 4) matrices at running frequency 200 MHz.  

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