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You searched for +publisher:"Clemson University" +contributor:("Dr. Richard Brooks"). Showing records 1 – 3 of 3 total matches.

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Clemson University

1. Robinson, Jamar. An Analysis of Variation Between Cores For Intel Xeon Phi Knights Corner And Xeon Phi Knights Landing.

Degree: MS, Computer Engineering, 2017, Clemson University

As we move towards exascale computing, the efficiency of application performance and energy utilization, must be optimized by redefining architectural features and application performance analysis. This research analyzes the performance per core of 8 applications on Intel Xeon Phi Knights Corner (KNC) and Knights Landing (KNL) to determine if performance variation within cores can lead to performance and energy improvements. Our results showed that KNC architecture's core vary in performance, leading to faster inner core performance as a result of memory characteristics and core utilization. It also shows that cores 17, 34, and 51 on the KNL architectures performs consistently slower than other cores, with core 0 performing either faster, slower or within the average performance time all the cores. A power performance study was then done utilizing different core configurations on the KNC. The results show that by targeting inner cores for applications that exhibit better inner core performance, a maximum energy reduction of 16.4% compared to a con- figuration using all cores was possible with its optimal thread configuration. Energy reduction was achieved with along with a 2% reduction in the fastest execution time of the same application. Our results also show how application characteristics lead to different core variation performances on KNC and KNL Xeon Phi architectures. Advisors/Committee Members: Dr. Melissa Smith, Committee Chair, Dr. Richard Brooks, Dr. Adam Hoover, Dr. Daniel Noneaker.

Subjects/Keywords: Core Variation; Openmp; Performance Study; Xeon Phi KNC; Xeon Phi KNL

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APA (6th Edition):

Robinson, J. (2017). An Analysis of Variation Between Cores For Intel Xeon Phi Knights Corner And Xeon Phi Knights Landing. (Masters Thesis). Clemson University. Retrieved from http://tigerprints.clemson.edu/all_theses/2668

Chicago Manual of Style (16th Edition):

Robinson, Jamar. “An Analysis of Variation Between Cores For Intel Xeon Phi Knights Corner And Xeon Phi Knights Landing.” 2017. Masters Thesis, Clemson University. Accessed September 20, 2017. http://tigerprints.clemson.edu/all_theses/2668.

MLA Handbook (7th Edition):

Robinson, Jamar. “An Analysis of Variation Between Cores For Intel Xeon Phi Knights Corner And Xeon Phi Knights Landing.” 2017. Web. 20 Sep 2017.

Vancouver:

Robinson J. An Analysis of Variation Between Cores For Intel Xeon Phi Knights Corner And Xeon Phi Knights Landing. [Internet] [Masters thesis]. Clemson University; 2017. [cited 2017 Sep 20]. Available from: http://tigerprints.clemson.edu/all_theses/2668.

Council of Science Editors:

Robinson J. An Analysis of Variation Between Cores For Intel Xeon Phi Knights Corner And Xeon Phi Knights Landing. [Masters Thesis]. Clemson University; 2017. Available from: http://tigerprints.clemson.edu/all_theses/2668


Clemson University

2. Abdollahi Biron, Zoleikha. A Resilient Control Approach to Secure Cyber Physical Systems (CPS) with an Application on Connected Vehicles.

Degree: PhD, Automotive Engineering, 2017, Clemson University

The objective of this dissertation is to develop a resilient control approach to secure Cyber Physical Systems (CPS) against cyber-attacks, network failures and potential physical faults. Despite being potentially beneficial in several aspects, the connectivity in CPSs poses a set of specific challenges from safety and reliability standpoint. The first challenge arises from unreliable communication network which affects the control/management of overall system. Second, faulty sensors and actuators can degrade the performance of CPS and send wrong information to the controller or other subsystems of the CPS. Finally, CPSs are vulnerable to cyber-attacks which can potentially lead to dangerous scenarios by affecting the information transmitted among various components of CPSs. Hence, a resilient control approach is proposed to address these challenges. The control approach consists of three main parts:(1) Physical fault diagnostics: This part makes sure the CPS works normally while there is no cyber-attacks/ network failure in the communication network; (2) Cyber-attack/failure resilient strategy: This part consists of a resilient strategy for specific cyber-attacks to compensate for their malicious effects ; (3) Decision making algorithm: The decision making block identifies the specific existing cyber-attacks/ network failure in the system and deploys corresponding control strategy to minimize the effect of abnormality in the system performance. In this dissertation, we consider a platoon of connected vehicle system under Co-operative Adaptive Cruise Control (CACC) strategy as a CPS and develop a resilient control approach to address the aforementioned challenges. The first part of this dissertation investigates fault diagnostics of connected vehicles assuming ideal communication network. Very few works address the real-time diagnostics problem in connected vehicles. This study models the effect of different faults in sensors and actuators, and also develops fault diagnosis scheme for detectable and identifiable faults. The proposed diagnostics scheme is based on sliding model observers to detect, isolate and estimate faults in the sensors and actuators. One of the main advantages of sliding model approach lies in applicability to nonlinear systems. Therefore, the proposed method can be extended for other nonlinear cyber physical systems as well. The second part of the proposed research deals with developing strategies to maintain performance of cyber-physical systems close to the normal, in the presence of common cyber-attacks and network failures. Specifically, the behavior of Dedicated Short-Range Communication (DSRC) network is analyzed under cyber-attacks and failures including packet dropping, Denial of Service (DOS) attack and false data injection attack. To start with, packet dropping in network communication is modeled by Bernoulli random variable. Then an observer based modifying algorithm is proposed to modify the existing CACC strategy against the effect of packet dropping phenomena. In… Advisors/Committee Members: Dr. Pierluigi Pisu, Committee Chair, Dr. Richard Brooks, Co-chair, Dr. Beshah Ayalew, Dr. Yongqiang Wang.

Subjects/Keywords: Connected Vehicles; Control; Cyber Physical System; Estimation and Diagnostics; Observer design; Resiliency

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Abdollahi Biron, Z. (2017). A Resilient Control Approach to Secure Cyber Physical Systems (CPS) with an Application on Connected Vehicles. (Doctoral Dissertation). Clemson University. Retrieved from http://tigerprints.clemson.edu/all_dissertations/1869

Chicago Manual of Style (16th Edition):

Abdollahi Biron, Zoleikha. “A Resilient Control Approach to Secure Cyber Physical Systems (CPS) with an Application on Connected Vehicles.” 2017. Doctoral Dissertation, Clemson University. Accessed September 20, 2017. http://tigerprints.clemson.edu/all_dissertations/1869.

MLA Handbook (7th Edition):

Abdollahi Biron, Zoleikha. “A Resilient Control Approach to Secure Cyber Physical Systems (CPS) with an Application on Connected Vehicles.” 2017. Web. 20 Sep 2017.

Vancouver:

Abdollahi Biron Z. A Resilient Control Approach to Secure Cyber Physical Systems (CPS) with an Application on Connected Vehicles. [Internet] [Doctoral dissertation]. Clemson University; 2017. [cited 2017 Sep 20]. Available from: http://tigerprints.clemson.edu/all_dissertations/1869.

Council of Science Editors:

Abdollahi Biron Z. A Resilient Control Approach to Secure Cyber Physical Systems (CPS) with an Application on Connected Vehicles. [Doctoral Dissertation]. Clemson University; 2017. Available from: http://tigerprints.clemson.edu/all_dissertations/1869


Clemson University

3. Izard, Ryan. Data Movement Challenges and Solutions with Software Defined Networking.

Degree: PhD, Computer Engineering, 2017, Clemson University

With the recent rise in cloud computing, applications are routinely accessing and interacting with data on remote resources. Interaction with such remote resources for the operation of media-rich applications in mobile environments is also on the rise. As a result, the performance of the underlying network infrastructure can have a significant impact on the quality of service experienced by the user. Despite receiving significant attention from both academia and industry, computer networks still face a number of challenges. Users oftentimes report and complain about poor experiences with their devices and applications, which can oftentimes be attributed to network performance when downloading or uploading application data. This dissertation investigates problems that arise with data movement across computer networks and proposes novel solutions to address these issues through software defined networking (SDN). SDN is lauded to be the paradigm of choice for next generation networks. While academia explores use cases in various contexts, industry has focused on data center and wide area networks. There is a significant range of complex and application-specific network services that can potentially benefit from SDN, but introduction and adoption of such solutions remains slow in production networks. One impeding factor is the lack of a simple yet expressive enough framework applicable to all SDN services across production network domains. Without a uniform framework, SDN developers create disjoint solutions, resulting in untenable management and maintenance overhead. The SDN-based solutions developed in this dissertation make use of a common agent-based approach. The architecture facilitates application-oriented SDN design with an abstraction composed of software agents on top of the underlying network. There are three key components modern and future networks require to deliver exceptional data transfer performance to the end user: (1) user and application mobility, (2) high throughput data transfer, and (3) efficient and scalable content distribution. Meeting these key components will not only ensure the network can provide robust and reliable end-to-end connectivity, but also that network resources will be used efficiently. First, mobility support is critical for user applications to maintain connectivity to remote, cloud-based resources. Today's network users are frequently accessing such resources while on the go, transitioning from network to network with the expectation that their applications will continue to operate seamlessly. As users perform handovers between heterogeneous networks or between networks across administrative domains, the application becomes responsible for maintaining or establishing new connections to remote resources. Although application developers often account for such handovers, the result is oftentimes visible to the user through diminished quality of service (e.g. rebuffering in video streaming applications). Many intra-domain handover solutions exist for handovers… Advisors/Committee Members: Dr. Kuang-Ching Wang, Committee Chair, Dr. Harlan Russell, Dr. Richard Brooks, Dr. Jim Martin.

Subjects/Keywords: data movement; network; openflow; software defined networking

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Izard, R. (2017). Data Movement Challenges and Solutions with Software Defined Networking. (Doctoral Dissertation). Clemson University. Retrieved from http://tigerprints.clemson.edu/all_dissertations/1910

Chicago Manual of Style (16th Edition):

Izard, Ryan. “Data Movement Challenges and Solutions with Software Defined Networking.” 2017. Doctoral Dissertation, Clemson University. Accessed September 20, 2017. http://tigerprints.clemson.edu/all_dissertations/1910.

MLA Handbook (7th Edition):

Izard, Ryan. “Data Movement Challenges and Solutions with Software Defined Networking.” 2017. Web. 20 Sep 2017.

Vancouver:

Izard R. Data Movement Challenges and Solutions with Software Defined Networking. [Internet] [Doctoral dissertation]. Clemson University; 2017. [cited 2017 Sep 20]. Available from: http://tigerprints.clemson.edu/all_dissertations/1910.

Council of Science Editors:

Izard R. Data Movement Challenges and Solutions with Software Defined Networking. [Doctoral Dissertation]. Clemson University; 2017. Available from: http://tigerprints.clemson.edu/all_dissertations/1910

.