Slides in Powerpoint
... Leader failure: backup leader or election Network partition failure Timeout all nodes managed by a failed leader Hierarchical timeout: longer timeout for higher ...
... Leader failure: backup leader or election Network partition failure Timeout all nodes managed by a failed leader Hierarchical timeout: longer timeout for higher ...
COSC A365 Chapter 2
... Resource allocation - When multiple users or multiple jobs running concurrently, resources must be allocated to each of them ...
... Resource allocation - When multiple users or multiple jobs running concurrently, resources must be allocated to each of them ...
OPERATING SYSTEMS: DESIGN AND IMPLEMENTATION
... Figure 1-16. How a system call can be made: (1) User program traps to the kernel. (2) Operating system determines service number required. (3) Operating system calls service procedure. (4) Control is returned to user program. ...
... Figure 1-16. How a system call can be made: (1) User program traps to the kernel. (2) Operating system determines service number required. (3) Operating system calls service procedure. (4) Control is returned to user program. ...
the Mach kernel
... System implements only basic Mach features in the kernel. All UNIX-specific code has been evicted from the kernel to run in user-mode servers. Excluding UNIX-specific code from the kernel allows replacement of BSD with another operating system or the simultaneous execution of multiple operatin ...
... System implements only basic Mach features in the kernel. All UNIX-specific code has been evicted from the kernel to run in user-mode servers. Excluding UNIX-specific code from the kernel allows replacement of BSD with another operating system or the simultaneous execution of multiple operatin ...
ch01
... • Operating System manages all of the hardware and software of a computer system • Each manager of an OS both works closely with the other managers and performs its unique role • Operating systems with networking capability have Network Manager • Essential hardware components include memory chips, I ...
... • Operating System manages all of the hardware and software of a computer system • Each manager of an OS both works closely with the other managers and performs its unique role • Operating systems with networking capability have Network Manager • Essential hardware components include memory chips, I ...
Operating System Structure
... Communications may be via shared memory or through message passing (packets moved by the OS) ...
... Communications may be via shared memory or through message passing (packets moved by the OS) ...
Generalized Multiprotocol Label Switching: An Overview of
... Difficult to provide a clean interface for SONET equipment which may rely on bidirectional hop-by-hop paths for protection switching ...
... Difficult to provide a clean interface for SONET equipment which may rely on bidirectional hop-by-hop paths for protection switching ...
Abstract View of System Components
... Given the I/O instructions are privileged, how does the user program perform I/O? System call – user process request I/O action to OS Usually takes the form of a trap to a specific location in the interrupt vector. Control passes through the interrupt vector to a service routine in the OS, a ...
... Given the I/O instructions are privileged, how does the user program perform I/O? System call – user process request I/O action to OS Usually takes the form of a trap to a specific location in the interrupt vector. Control passes through the interrupt vector to a service routine in the OS, a ...
A User Mode L4 Environment
... The Sigma0 server is the first UMOL4 task. It receives a complete mapping of the MemFile. Unmapping of pages can be implemented either by munmap or mprotect. Problems may arise, if the number of mappings of all UMOL4 tasks exceed the number of Linux’ mmap sections. This can be solved as following: t ...
... The Sigma0 server is the first UMOL4 task. It receives a complete mapping of the MemFile. Unmapping of pages can be implemented either by munmap or mprotect. Problems may arise, if the number of mappings of all UMOL4 tasks exceed the number of Linux’ mmap sections. This can be solved as following: t ...
Slides: Monitoring.
... Euclidean plane; they are often used to model wireless networks. A PG is a graph that can be drawn in such a way that no edges “cross” each other; they are often used to model transportation networks, but also communication networks. ...
... Euclidean plane; they are often used to model wireless networks. A PG is a graph that can be drawn in such a way that no edges “cross” each other; they are often used to model transportation networks, but also communication networks. ...
Node Localization in Sensor Networks
... • Energy aware routing – longer paths are ok => avoid nodes with less energy ...
... • Energy aware routing – longer paths are ok => avoid nodes with less energy ...
A Scalable Self-organizing Map Algorithm for Textual Classification
... • The ``winning'' mapping node is defined as that with the smallest Euclidean distance between the mapping node vector and the input vector. • The input thus maps to a given mapping node. • The value of the mapping node vector is then adjusted to reduce the Euclidean distance. • In addition, all of ...
... • The ``winning'' mapping node is defined as that with the smallest Euclidean distance between the mapping node vector and the input vector. • The input thus maps to a given mapping node. • The value of the mapping node vector is then adjusted to reduce the Euclidean distance. • In addition, all of ...
Quality of services solution for efficient communication within a distributed urban traffic control system Ana Maria Nicoleta Mocofan, Răzvan Ghiţă, Vicente Ramón Tomás López, Florin Codruţ Nemţanu
... developed. This document presents a general vision of the data quality concepts, examples and it includes a set of best practices. Nevertheless, these studies do not analyse the communication data quality. They are only focused on the ITS services itself [12]. Authors have conducted various research ...
... developed. This document presents a general vision of the data quality concepts, examples and it includes a set of best practices. Nevertheless, these studies do not analyse the communication data quality. They are only focused on the ITS services itself [12]. Authors have conducted various research ...
iptcom10-rel - Computer Science, Columbia University
... – strategies perform similar near system collapse point – minimizing latency increases annoyance, number of jobs per relay, vice versa – threshold approach performs reasonably well ...
... – strategies perform similar near system collapse point – minimizing latency increases annoyance, number of jobs per relay, vice versa – threshold approach performs reasonably well ...
NEONET Netherlands Earth Observation Network
... – New or changed XML files get broadcasted to all nodes – Nodes retrieves files and records from local cache – No multicast for servlet results, only for database synchronisation CXXX-12A ...
... – New or changed XML files get broadcasted to all nodes – Nodes retrieves files and records from local cache – No multicast for servlet results, only for database synchronisation CXXX-12A ...
Unit 3 Operation System
... Multi-Tasking Operating System Multi-User Operating System Distributed Operating System ...
... Multi-Tasking Operating System Multi-User Operating System Distributed Operating System ...
Chapter 1 System Models and Enabling Technologies
... For a long time, high-performance computing (HPC) systems emphasizes the raw speed performance. The speed of HPC systems increased from Gflops in the early 1990’s to now Pflops in 2010. This improvement was driven mainly by demands from scientific, engineering, and manufacturing communities in the p ...
... For a long time, high-performance computing (HPC) systems emphasizes the raw speed performance. The speed of HPC systems increased from Gflops in the early 1990’s to now Pflops in 2010. This improvement was driven mainly by demands from scientific, engineering, and manufacturing communities in the p ...
Wireless Embedded Systems and Networking Foundations of IP
... Reference > Application Documention ...
... Reference > Application Documention ...
Windows 2000 Dependability
... These are addressed in NT 4.0 through improvements in driver and application quality, Windows 2000 focused on these types of issues through the following features. Job object API allows application developers to manage a set of processes as a single unit. Developers can place constraints on the unit ...
... These are addressed in NT 4.0 through improvements in driver and application quality, Windows 2000 focused on these types of issues through the following features. Job object API allows application developers to manage a set of processes as a single unit. Developers can place constraints on the unit ...
Center for Integrated Systems Design
... 1. Sensor data processing and systems-on-a-chip --Improved accuracy and speed --Smaller circuits ...
... 1. Sensor data processing and systems-on-a-chip --Improved accuracy and speed --Smaller circuits ...
1999 - 2000
... Like many developments, the first digital computer was developed due to the motivation of war. During the second world war many people were developing automatic calculating machines. For example By 1941 a German engineer (Konrad Zuse) had developed a computer (the Z3) that designed airplanes and m ...
... Like many developments, the first digital computer was developed due to the motivation of war. During the second world war many people were developing automatic calculating machines. For example By 1941 a German engineer (Konrad Zuse) had developed a computer (the Z3) that designed airplanes and m ...
Intel SIO Presentation
... Detect and recover from it Prevent it (prevent one of the four conditions) Avoid it (have tight control over resource allocation) ...
... Detect and recover from it Prevent it (prevent one of the four conditions) Avoid it (have tight control over resource allocation) ...
An Approach to Memory management in Wireless Sensor
... Memory in current sensor nodes consists of: RAM (for fast data storage), internal flash (for code storage), EEPROM (for data storage), and external flash which is required for data persistence. In a traditional operating system, memory management refers to various techniques used for allocation and ...
... Memory in current sensor nodes consists of: RAM (for fast data storage), internal flash (for code storage), EEPROM (for data storage), and external flash which is required for data persistence. In a traditional operating system, memory management refers to various techniques used for allocation and ...
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.