scholarly journals Pre-compiling Parallel Algorithms for Compilers into a Network

2021 ◽  
Author(s):  
Mahdi Jemmali ◽  
Fayez Al Fayez
Keyword(s):  
Data Center ◽  
High Efficiency ◽  
Memory Allocation ◽  
Timely Manner ◽  
Optimum Time ◽  
Encrypted Data ◽  
Running Time ◽  
New Novel ◽  
Np Hard Problem ◽  
Paper Address

Abstract The paper presents a novel pre-compiler approach by introducing several algorithms to solve the NP-hard problem. The paper address the challenge of transferring a large number of files from a data center (DC), encrypt it using compilers and send it through a network in the optimum time possible. Due to the high usage of big data, one compiler is not sufficient to encrypt such data in a timely manner. In order to achieve high efficiency of sending encrypted data while guarantee security and time efficiency, a new novel architecture of two parallel compilers is proposed. The running time of a given application is calculated through program instructions running time, memory allocation time and the compilation time. To have an appropriate running time it is important to choose an efficient algorithm to schedule files to compilers. Several algorithms will be coded and experimented to show the performance in time and gap.

scholarly journals Possible Cisco-based Fire Protection Solutions in Education Institutions

2019 ◽  
Vol 11 (1) ◽  
pp. 31-34
Author(s):  
Krisztián Bálint
Keyword(s):  
Fire Protection ◽  
Educational Institution ◽  
Network Control ◽  
Virtual Network ◽  
Timely Manner ◽  
Potential Threat ◽  
Encrypted Data ◽  
Access System ◽  
Efficient Protection ◽  
New Generation

Abstract Solutions based on Cisco firewall protection provide numerous possibilities for more efficient protection of the abundant quantity of data that is necessary for the operation of an educational institution. Firstly, data phishing can be complicated by the constitution of a virtual network. The IDPS-based access system enables the management center to identify a potential threat in a timely manner. Furthermore, the Cisco-type firewall of a new generation is able to verify the encrypted data in a way that avoids decoding and listening the communication itself. The AAA framework is also an imperative, as in case of a network, control of access is of the utmost importance.

Rack Server Solution in Data Center

2015 ◽  
Author(s):  
Sheng Kang ◽  
Guofeng Chen ◽  
Chun Wang ◽  
Ruiquan Ding ◽  
Jiajun Zhang ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Power Supply ◽  
Data Center ◽  
Power Efficiency ◽  
High Performance ◽  
High Efficiency ◽  
High Growth ◽  
General Purpose ◽  
Power Supplies

With the advent of big data and cloud computing solutions, enterprise demand for servers is increasing. There is especially high growth for Intel based x86 server platforms. Today’s datacenters are in constant pursuit of high performance/high availability computing solutions coupled with low power consumption and low heat generation and the ability to manage all of this through advanced telemetry data gathering. This paper showcases one such solution of an updated rack and server architecture that promises such improvements. The ability to manage server and data center power consumption and cooling more completely is critical in effectively managing datacenter costs and reducing the PUE in the data center. Traditional Intel based 1U and 2U form factor servers have existed in the data center for decades. These general purpose x86 server designs by the major OEM’s are, for all practical purposes, very similar in their power consumption and thermal output. Power supplies and thermal designs for server in the past have not been optimized for high efficiency. In addition, IT managers need to know more information about servers in order to optimize data center cooling and power use, an improved server/rack design needs to be built to take advantage of more efficient power supplies or PDU’s and more efficient means of cooling server compute resources than from traditional internal server fans. This is the constant pursuit of corporations looking at new ways to improving efficiency and gaining a competitive advantage. A new way to optimize power consumption and improve cooling is a complete redesign of the traditional server rack. Extracting internal server power supplies and server fans and centralizing these within the rack aims to achieve this goal. This type of design achieves an entirely new low power target by utilizing centralized, high efficiency PDU’s that power all servers within the rack. Cooling is improved by also utilizing large efficient rack based fans for airflow to all servers. Also, opening up the server design is to allow greater airflow across server components for improved cooling. This centralized power supply breaks through the traditional server power limits. Rack based PDU’s can adjust the power efficiency to a more optimum point. Combine this with the use of online + offline modes within one single power supply. Cold backup makes data center power to achieve optimal power efficiency. In addition, unifying the mechanical structure and thermal definitions within the rack solution for server cooling and PSU information allows IT to collect all server power and thermal information centrally for improved ease in analyzing and processing.

On Enabling Attribute-Based Encryption to Be Traceable Against Traitors

2020 ◽  
Author(s):  
Zhen Liu ◽  
Qiong Huang ◽  
Duncan S Wong
Keyword(s):  
Access Control ◽  
High Efficiency ◽  
Black Box ◽  
The Other ◽  
Encrypted Data ◽  
Malicious User ◽  
Fine Grained ◽  
Other Hand ◽  
Attribute Based Encryption

Abstract Attribute-based encryption (ABE) is a versatile one-to-many encryption primitive, which enables fine-grained access control over encrypted data. Due to its promising applications in practice, ABE schemes with high efficiency, security and expressivity have been continuously emerging. On the other hand, due to the nature of ABE, a malicious user may abuse its decryption privilege. Therefore, being able to identify such a malicious user is crucial towards the practicality of ABE. Although some specific ABE schemes in the literature enjoys the tracing function, they are only proceeded case by case. Most of the ABE schemes do not support traceability. It is thus meaningful and important to have a generic way of equipping any ABE scheme with traceability. In this work, we partially solve the aforementioned problem. Namely, we propose a way of transforming (non-traceable) ABE schemes satisfying certain requirements to fully collusion-resistant black-box traceable ABE schemes, which adds only $O(\sqrt{\mathcal{K}})$ elements to the ciphertext where ${\mathcal{K}}$ is the number of users in the system. And to demonstrate the practicability of our transformation, we show how to convert a couple of existing non-traceable ABE schemes to support traceability.

Research on Intelligent Air Conditioning System of Data Center

2014 ◽  
Vol 602-605 ◽  
pp. 928-932
Author(s):  
Min Li ◽  
Yun Wang ◽  
Zheng Qian Feng ◽  
Wang Li
Keyword(s):  
Heat Exchange ◽  
Energy Saving ◽  
Data Center ◽  
Air Conditioning ◽  
Data Centers ◽  
Cooling Efficiency ◽  
Exchange System ◽  
Air Conditioning System ◽  
Running Time ◽  
Heat Exchange System

By studying the energy-saving technologies of air-conditioning system in data centers, we designed a intelligent air conditioning system, improved the cooling efficiency of air conditioning system through a reasonable set of hot and cold aisles, reduced the running time of HVAC by using the intelligent heat exchange system, an provided a reference for energy saving research of air conditioning system of data centers.

System Optimization of High-efficiency 400 Gb/s PAM4 Silicon Photonics Transmitter for Data Center Applications

2021 ◽  
Author(s):  
Siamak Amiralizadeh ◽  
Wenhua Lin ◽  
David Patel ◽  
Yann Malinge ◽  
Stefan Burmeister ◽  
...  
Keyword(s):  
Silicon Photonics ◽  
Data Center ◽  
High Efficiency ◽  
System Optimization

Impingement Cooling in a Simulated Data Center Servers With an Array of Elliptic Air Jets

2015 ◽  
Author(s):  
Sheng-Kai Chang ◽  
Lo Yuan-Hsiang ◽  
Yao-Hsien Liu
Keyword(s):  
Heat Transfer ◽  
Data Center ◽  
High Efficiency ◽  
Simulated Data ◽  
Target Surface ◽  
Transfer Coefficients ◽  
Cross Sectional ◽  
Impingement Cooling ◽  
Air Jets ◽  
High Heat Transfer

Reducing the electricity consumption from the cooling systems in a data center can cut the energy cost. The development of the high efficiency cooling schemes can effectively save more energy from the computer room air conditioning (CRAC) system. Impingement cooling with air jets can achieve high heat transfer rates and could be used to cool local hot spots in the cabinets. A 5 × 5 jet array was designed utilizing circular and elliptic holes. The cross sectional area of the test region was 250 mm × 25 mm. The jet Reynolds numbers is 3300. Heat transfer coefficients on the target surface were investigated. Results indicated that the impingement cooling provided lower surface temperature than the traditional fan cooling.

An All-SiC Three-Phase Buck Rectifier for High-Efficiency Data Center Power Supplies

2013 ◽  
Vol 49 (6) ◽  
pp. 2662-2673 ◽  
Author(s):  
Fan Xu ◽  
Ben Guo ◽  
Leon M. Tolbert ◽  
Fei Wang ◽  
Benjamin J. Blalock
Keyword(s):  
Data Center ◽  
High Efficiency ◽  
Power Supplies ◽  
Three Phase ◽  
Efficiency Data
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