Systematic setup of compartmentalised systems on the seL4
... Developing high assurance systems is a hard problem. It requires intimate knowledge of system hardware and careful design and verification of the controlling software. When following a security architecture like MILS [AFOTH06] a microkernel controls the computer’s central processing unit. The microk ...
... Developing high assurance systems is a hard problem. It requires intimate knowledge of system hardware and careful design and verification of the controlling software. When following a security architecture like MILS [AFOTH06] a microkernel controls the computer’s central processing unit. The microk ...
ABSTRACT Title of Dissertation: Discovering and Securing Shared Resources on the Internet
... The Internet is a collection of shared resources. Internet users share bandwidth and processing resources both in the network at routers and on the network’s edge at servers. However, the Internet’s architecture does not prevent nodes from consuming disproportionate resources. In practice, resource ...
... The Internet is a collection of shared resources. Internet users share bandwidth and processing resources both in the network at routers and on the network’s edge at servers. However, the Internet’s architecture does not prevent nodes from consuming disproportionate resources. In practice, resource ...
Berkeley NOW - Computer Science Division
... – monolithic event processing – bring full thread/socket posix regime to platform ...
... – monolithic event processing – bring full thread/socket posix regime to platform ...
Efficient Hardware/Software Architectures for Highly Concurrent
... that enables this kind of consolidation and sharing, but it is important that virtualization overheads are kept low so as to maximize the capacity of a consolidated server and thus maximize the associated power and cooling savings. However, modern server software architectures fall well short of mee ...
... that enables this kind of consolidation and sharing, but it is important that virtualization overheads are kept low so as to maximize the capacity of a consolidated server and thus maximize the associated power and cooling savings. However, modern server software architectures fall well short of mee ...
A novel methodology for dynamically reconfigurable embedded
... Configurable FPGA-Based Hardware Architecture for Adaptive Processing of Noisy Signals for Target Detection based on Constant False Alarm Rate (CFAR) Algorithms . ...
... Configurable FPGA-Based Hardware Architecture for Adaptive Processing of Noisy Signals for Target Detection based on Constant False Alarm Rate (CFAR) Algorithms . ...
SNAP Network Operating System - Synapse forums
... SNAP, as mentioned before, is the protocol used by all SNAP devices. It is the underlying operating system that allows devices to talk to each other, comprising the communication and control structures between SNAP devices. The SNAP OS is the infrastructure that creates the mesh network. Most SNAP c ...
... SNAP, as mentioned before, is the protocol used by all SNAP devices. It is the underlying operating system that allows devices to talk to each other, comprising the communication and control structures between SNAP devices. The SNAP OS is the infrastructure that creates the mesh network. Most SNAP c ...
Threads
... – Multiple producer threads create data (or work) that is handled by one of the multiple consumer threads ...
... – Multiple producer threads create data (or work) that is handled by one of the multiple consumer threads ...
a High-performance Endsystem Architecture for Real
... (The ACE ORB) [8, 9]. TAO is a multi-threaded ORB endsystem that runs on a range of OS platforms that support real-time features including Solaris, Windows NT, and VxWorks. Our objective in developing TAO is to identify the key architectural patterns and performance optimizations necessary to build ...
... (The ACE ORB) [8, 9]. TAO is a multi-threaded ORB endsystem that runs on a range of OS platforms that support real-time features including Solaris, Windows NT, and VxWorks. Our objective in developing TAO is to identify the key architectural patterns and performance optimizations necessary to build ...
Operating Systems Threads
... • traces state of procedure calls made – the program counter (PC), indicating the next instruction – a set of general-purpose processor registers and their values ...
... • traces state of procedure calls made – the program counter (PC), indicating the next instruction – a set of general-purpose processor registers and their values ...
PowerPoint
... More advanced operating system functions are handled by separate user-space server programs that run on top of and communicate with Mach. Mach's only functions are to keep the servers running and to coordinate their access to raw hardware. At its most basic level, it is an event handler, not an oper ...
... More advanced operating system functions are handled by separate user-space server programs that run on top of and communicate with Mach. Mach's only functions are to keep the servers running and to coordinate their access to raw hardware. At its most basic level, it is an event handler, not an oper ...
Part 4
... Number of connected components Size and density of the largest connected component Number of triads in the graph ...
... Number of connected components Size and density of the largest connected component Number of triads in the graph ...
Chap10_Peer-to-Peer_Team4
... Next generation from Napster - true Peer To Peer (P2P) Can handle large files e.g WAV, DVD, FLAC (e.g 1CD = ...
... Next generation from Napster - true Peer To Peer (P2P) Can handle large files e.g WAV, DVD, FLAC (e.g 1CD = ...
Energy-Efficient and Coverage-Aware Clustering in Wireless Sensor
... Keywords: WSN; Clustering; LEACH; Virtual Field Force; Lifetime; Sensing Coverage ...
... Keywords: WSN; Clustering; LEACH; Virtual Field Force; Lifetime; Sensing Coverage ...
TinyOS - GEOCITIES.ws
... Each mote maintains the address of its parent and its depth in the tree, advertising its depth in each radio message Once a second, each mote samples its light sensor and sends the sample to its parent. Parents acknowledge received packets. Surge uses the acknowledgments to provide a reliable ...
... Each mote maintains the address of its parent and its depth in the tree, advertising its depth in each radio message Once a second, each mote samples its light sensor and sends the sample to its parent. Parents acknowledge received packets. Surge uses the acknowledgments to provide a reliable ...
CPU Scheduling
... Of the scheduling algorithms FCFS, SJF, and RR(qt=2) which algorithm offers the best waiting time? In many multiprocessing systems, although there is a fixed limit to the amount of time that a job can keep control of the CPU, in practice, the jobs are released earlier. Why? The book talked about the ...
... Of the scheduling algorithms FCFS, SJF, and RR(qt=2) which algorithm offers the best waiting time? In many multiprocessing systems, although there is a fixed limit to the amount of time that a job can keep control of the CPU, in practice, the jobs are released earlier. Why? The book talked about the ...
DMP: Detouring Using Multiple Paths against Jamming Attack for
... path to a specific SOS-protected destination. HOURS [10] using hierarchical overlays achieved DoS resilience in an open service hierarchy, such as a domain name server (DNS), lightweight directory access protocol (LDAP), or public key infrastructure (PKI). However, these overlay architectures are no ...
... path to a specific SOS-protected destination. HOURS [10] using hierarchical overlays achieved DoS resilience in an open service hierarchy, such as a domain name server (DNS), lightweight directory access protocol (LDAP), or public key infrastructure (PKI). However, these overlay architectures are no ...
An Analysis of Fault Isolation in Multi
... • Need more efficient approach for message complexity. • Possible model is suppressed one-way probing mechanism. Source sends a special packet to multicast group. All internal router records its routing information in the special packet. Without packet suppression, implosion problem will be occurred ...
... • Need more efficient approach for message complexity. • Possible model is suppressed one-way probing mechanism. Source sends a special packet to multicast group. All internal router records its routing information in the special packet. Without packet suppression, implosion problem will be occurred ...
Communication-and-Security-in-M2M
... – Goal is to develop technical specifications which address the need for a common M2M service layer, which can be realized through various hardware and software implementations, to connect diverse M2M devices with M2M servers. ...
... – Goal is to develop technical specifications which address the need for a common M2M service layer, which can be realized through various hardware and software implementations, to connect diverse M2M devices with M2M servers. ...
Document
... P2P Definition(s) A number of definitions coexist: • Def 1: “A class of applications that takes advantage of resources — storage, cycles, content, human presence — available at the edges of the Internet.” – Edges often turned off, without permanent IP addresses ...
... P2P Definition(s) A number of definitions coexist: • Def 1: “A class of applications that takes advantage of resources — storage, cycles, content, human presence — available at the edges of the Internet.” – Edges often turned off, without permanent IP addresses ...
Probability Model Based Energy Efficient and Reliable
... Wireless sensor networks (WSNs) have become more and more widely used and important in recent years. The properties of WSNs—which contain hundreds or thousands of sensors—are limited by the energy, the bandwidth, the capability of computing, etc. Moreover, in most applications, the WSNs are arranged ...
... Wireless sensor networks (WSNs) have become more and more widely used and important in recent years. The properties of WSNs—which contain hundreds or thousands of sensors—are limited by the energy, the bandwidth, the capability of computing, etc. Moreover, in most applications, the WSNs are arranged ...
Threads
... Data parallelism – distributes subsets of the same data across multiple cores, same operation on each ...
... Data parallelism – distributes subsets of the same data across multiple cores, same operation on each ...
Distributed operating system
A distributed operating system is a software over a collection of independent, networked, communicating, and physically separate computational nodes. Each individual node holds a specific software subset of the global aggregate operating system. Each subset is a composite of two distinct service provisioners. The first is a ubiquitous minimal kernel, or microkernel, that directly controls that node’s hardware. Second is a higher-level collection of system management components that coordinate the node's individual and collaborative activities. These components abstract microkernel functions and support user applications.The microkernel and the management components collection work together. They support the system’s goal of integrating multiple resources and processing functionality into an efficient and stable system. This seamless integration of individual nodes into a global system is referred to as transparency, or single system image; describing the illusion provided to users of the global system’s appearance as a single computational entity.