scholarly journals Operating System for Runtime Reconfigurable Multiprocessor Systems

2011 ◽  
Vol 2011 ◽  
pp. 1-16 ◽  
Author(s):  
Diana Göhringer ◽  
Michael Hübner ◽  
Etienne Nguepi Zeutebouo ◽  
Jürgen Becker
Keyword(s):  
Operating System ◽  
Resource Management ◽  
Multiprocessor System ◽  
Task Mapping ◽  
Access Port ◽  
Novel Approach ◽  
Hardware Resource ◽  
Hardware Architectures ◽  
On Chip ◽  
Internal Configuration

Operating systems traditionally handle the task scheduling of one or more application instances on processor-like hardware architectures. RAMPSoC, a novel runtime adaptive multiprocessor System-on-Chip, exploits the dynamic reconfiguration on FPGAs to generate, start and terminate hardware and software tasks. The hardware tasks have to be transferred to the reconfigurable hardware via a configuration access port. The software tasks can be loaded into the local memory of the respective IP core either via the configuration access port or via the on-chip communication infrastructure (e.g. a Network-on-Chip). Recent-series of Xilinx FPGAs, such as Virtex-5, provide two Internal Configuration Access Ports, which cannot be accessed simultaneously. To prevent conflicts, the access to these ports as well as the hardware resource management needs to be controlled, e.g. by a special-purpose operating system running on an embedded processor. For that purpose and to handle the relations between temporally and spatially scheduled operations, the novel approach of an operating system is of high importance. This special purpose operating system, called CAP-OS (Configuration Access Port-Operating System), which will be presented in this paper, supports the clients using the configuration port with the services of priority-based access scheduling, hardware task mapping and resource management.

scholarly journals Thermal-Aware Task Mapping on Dynamically Reconfigurable Network-on-Chip Based Multiprocessor System-on-Chip

2018 ◽  
Vol 67 (12) ◽  
pp. 1818-1834 ◽  
Author(s):  
Weichen Liu ◽  
Lei Yang ◽  
Weiwen Jiang ◽  
Liang Feng ◽  
Nan Guan ◽  
...  
Keyword(s):  
Network On Chip ◽  
System On Chip ◽  
Multiprocessor System ◽  
Task Mapping ◽  
Dynamically Reconfigurable ◽  
On Chip

scholarly journals An Autonomous, Self-Authenticating, and Self-Contained Secure Boot Process for Field-Programmable Gate Arrays

Cryptography ◽  
2018 ◽  
Vol 2 (3) ◽  
pp. 15 ◽  
Author(s):  
Don Owen Jr. ◽  
Derek Heeger ◽  
Calvin Chan ◽  
Wenjie Che ◽  
Fareena Saqib ◽  
...  
Keyword(s):  
Flash Memory ◽  
Ring Oscillator ◽  
Access Port ◽  
Gate Arrays ◽  
Start Up ◽  
Non Volatile Memory ◽  
Field Programmable ◽  
Programmable Gate Arrays ◽  
On Chip ◽  
Internal Configuration

Secure booting within a field-programmable gate array (FPGA) environment is traditionally implemented using hardwired embedded cryptographic primitives and non-volatile memory (NVM)-based keys, whereby an encrypted bitstream is decrypted as it is loaded from an external storage medium, e.g., Flash memory. A novel technique is proposed in this paper that self-authenticates an unencrypted FPGA configuration bitstream loaded into the FPGA during the start-up. The internal configuration access port (ICAP) interface is accessed to read out configuration information of the unencrypted bitstream, which is then used as input to a secure hash function SHA-3 to generate a digest. In contrast to conventional authentication, where the digest is computed and compared with a second pre-computed value, we use the digest as a challenge to a hardware-embedded delay physical unclonable function (PUF) called HELP. The delays of the paths sensitized by the challenges are used to generate a decryption key using the HELP algorithm. The decryption key is used in the second stage of the boot process to decrypt the operating system (OS) and applications. It follows that any type of malicious tampering with the unencrypted bitstream changes the challenges and the corresponding decryption key, resulting in key regeneration failure. A ring oscillator is used as a clock to make the process autonomous (and unstoppable), and a novel on-chip time-to-digital-converter is used to measure path delays, making the proposed boot process completely self-contained, i.e., implemented entirely within the re-configurable fabric and without utilizing any vendor-specific FPGA features.

PGSW-OS: a novel approach for resource management in a semantic web operating system based on a P2P grid architecture

2014 ◽  
Vol 69 (2) ◽  
pp. 955-975 ◽  
Author(s):  
Saeed Javanmardi ◽  
Mohammad Shojafar ◽  
Shahdad Shariatmadari ◽  
Jemal H. Abawajy ◽  
Mukesh Singhal
Keyword(s):  
Operating System ◽  
Resource Management ◽  
Semantic Web ◽  
Grid Architecture ◽  
Novel Approach

scholarly journals Realtime multiprocessor for mobile ad hoc networks

2008 ◽  
Vol 6 ◽  
pp. 239-243 ◽  
Author(s):  
T. Jungeblut ◽  
M. Grünewald ◽  
M. Porrmann ◽  
U. Rückert
Keyword(s):  
Ad Hoc ◽  
Total Power ◽  
Multiprocessor System ◽  
Clock Frequency ◽  
Wireless Applications ◽  
Novel Approach ◽  
Total Power Consumption ◽  
Mobile Ad Hoc ◽  
Hoc Networks ◽  
On Chip

Abstract. This paper introduces a real-time Multiprocessor System-On-Chip (MPSoC) for low power wireless applications. The multiprocessor is based on eight 32bit RISC processors that are connected via an Network-On-Chip (NoC). The NoC follows a novel approach with guaranteed bandwidth to the application that meets hard realtime requirements. At a clock frequency of 100 MHz the total power consumption of the MPSoC that has been fabricated in 180 nm UMC standard cell technology is 772 mW.

A high performance scalable fuzzy based modified Asymmetric Heterogene Multiprocessor System on Chip (AHt-MPSOC) reconfigurable architecture

2021 ◽  
pp. 1-12
Author(s):  
Arun Prasath Raveendran ◽  
Jafar A. Alzubi ◽  
Ramesh Sekaran ◽  
Manikandan Ramachandran
Keyword(s):  
High Performance ◽  
Standard Technique ◽  
System On Chip ◽  
Mixed Integer ◽  
Multiprocessor System ◽  
Compound System ◽  
Available Bandwidth ◽  
Mip Model ◽  
Fpga Chip ◽  
On Chip

This Ensuing generation of FPGA circuit tolerates the combination of lot of hard and soft cores as well as devoted accelerators on a chip. The Heterogene Multi-Processor System-on-Chip (Ht-MPSoC) architecture accomplishes the requirement of modern applications. A compound System on Chip (SoC) system designed for single FPGA chip, and that considered for the performance/power consumption ratio. In the existing method, a FPGA based Mixed Integer Programming (MIP) model used to define the Ht-MPSoC configuration by taking into consideration the sharing hardware accelerator between the cores. However, here, the sharing method differs from one processor to another based on FPGA architecture. Hence, high number of hardware resources on a single FPGA chip with low latency and power targeted. For this reason, a fuzzy based MIP and Graph theory based Traffic Estimator (GTE) are proposed system used to define New asymmetric multiprocessor heterogene framework on microprocessor (AHt-MPSoC) architecture. The bandwidths, energy consumption, wait and transmission range are better accomplished in this suggested technique than the standard technique and it is also implemented with a multi-task framework. The new Fuzzy control-based AHt-MPSoC analysis proves significant improvement of 14.7 percent in available bandwidth and 89.8 percent of energy minimized to various traffic scenarios as compared to conventional method.

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