ch16
... Processors variously called nodes, computers, machines, hosts Site is location of the processor Reasons for distributed systems ...
... Processors variously called nodes, computers, machines, hosts Site is location of the processor Reasons for distributed systems ...
slides - Computer Science
... Enables wimp applications to obtain isolated I/O channels to any subset of a system’s commodity devices needed during a session Enables trusted audit and control of physical devices without stopping and restarting applications, Allows unmodified commodity OSes to have unfettered access to all hardwar ...
... Enables wimp applications to obtain isolated I/O channels to any subset of a system’s commodity devices needed during a session Enables trusted audit and control of physical devices without stopping and restarting applications, Allows unmodified commodity OSes to have unfettered access to all hardwar ...
PPT file format 3.3M
... Process administration and process supervision Real-time database (RTDB) Calculation server (Soft SPC tasks) Visualization server and HMI Alarm server Message server Protocol drivers ...
... Process administration and process supervision Real-time database (RTDB) Calculation server (Soft SPC tasks) Visualization server and HMI Alarm server Message server Protocol drivers ...
WS-Transaction - itk.ilstu.edu
... However, in an Web services scenario, transactions may also take a long time to complete. For this case, WS-Transaction uses the notion of business activity and defines a protocol based on compensation (as opposed to locking) used to achieve distributed consensus on whether the results of a long-r ...
... However, in an Web services scenario, transactions may also take a long time to complete. For this case, WS-Transaction uses the notion of business activity and defines a protocol based on compensation (as opposed to locking) used to achieve distributed consensus on whether the results of a long-r ...
4.1 Introduction to the Operating System
... 4.1 Introduction to the Operating System (OS) and the OS Functions…continued Functions: Configuring Hardware and Peripheral Devices drivers: small computer programs that contain the instructions the OS uses to communicate and route data to/from a device Plug and Play: when you plug in a new de ...
... 4.1 Introduction to the Operating System (OS) and the OS Functions…continued Functions: Configuring Hardware and Peripheral Devices drivers: small computer programs that contain the instructions the OS uses to communicate and route data to/from a device Plug and Play: when you plug in a new de ...
Software Architecture Design of Wireless Sensor Networks
... Middleware refers “to the software layer between operating system and sensor application on the one hand and the distributed application which interacts over the network on the other hand.” [2] Opinions vary on the actual granularity limitations. Some maintain that middleware, in various forms, exis ...
... Middleware refers “to the software layer between operating system and sensor application on the one hand and the distributed application which interacts over the network on the other hand.” [2] Opinions vary on the actual granularity limitations. Some maintain that middleware, in various forms, exis ...
Threads
... requests a service from the operating system, it must wait for that service to complete, often leaving the CPU idle • Multithreading provides progress even though one or more threads wait for an event as long as other threads are active Ceng 334 - Operating Systems ...
... requests a service from the operating system, it must wait for that service to complete, often leaving the CPU idle • Multithreading provides progress even though one or more threads wait for an event as long as other threads are active Ceng 334 - Operating Systems ...
Chapter 1
... Program counter: next instruction to fetch Stack pointer: the top of the current stack PSW: program status word, priority, mode… ...
... Program counter: next instruction to fetch Stack pointer: the top of the current stack PSW: program status word, priority, mode… ...
No Slide Title
... – Since the shortest path is usually chosen, communication costs are minimized. – Fixed routing cannot adapt to load changes. – Ensures that messages will be delivered in the order in which they were sent. Virtual circuit. A path from A to B is fixed for the duration of one session. Different sessio ...
... – Since the shortest path is usually chosen, communication costs are minimized. – Fixed routing cannot adapt to load changes. – Ensures that messages will be delivered in the order in which they were sent. Virtual circuit. A path from A to B is fixed for the duration of one session. Different sessio ...
lecture31-dec11
... • The deadlock-avoidance algorithm dynamically examines the resource-allocation state to ensure that there can never be a circular-wait condition. • Resource-allocation state is defined by the number of available and allocated resources, and the maximum demands of the processes. ...
... • The deadlock-avoidance algorithm dynamically examines the resource-allocation state to ensure that there can never be a circular-wait condition. • Resource-allocation state is defined by the number of available and allocated resources, and the maximum demands of the processes. ...
ppt
... Reduced from 6 to 3 messages. Can design shortcuts such that O(log N) neighbors per peer, O(log N) messages per query ...
... Reduced from 6 to 3 messages. Can design shortcuts such that O(log N) neighbors per peer, O(log N) messages per query ...
Introduction - IDA.LiU.se
... n Coverage of basic computer system organization Copyright Notice: The lecture notes are mainly based on Silberschatz’s, Galvin’s and Gagne’s book (“Operating System Concepts”, 7th ed., Wiley, 2005). No part of the lecture notes may be reproduced in any form, due to the copyrights reserved by Wiley. ...
... n Coverage of basic computer system organization Copyright Notice: The lecture notes are mainly based on Silberschatz’s, Galvin’s and Gagne’s book (“Operating System Concepts”, 7th ed., Wiley, 2005). No part of the lecture notes may be reproduced in any form, due to the copyrights reserved by Wiley. ...
Operating system
... EEPROM is a special type of PROM that can be erased by exposing it to an electrical charge. EEPROM retains its contents even when the power is turned off. firmware: Firmware is software that is embedded in a piece of hardware. You can think of firmware simply as "software for hardware.“ Typical exam ...
... EEPROM is a special type of PROM that can be erased by exposing it to an electrical charge. EEPROM retains its contents even when the power is turned off. firmware: Firmware is software that is embedded in a piece of hardware. You can think of firmware simply as "software for hardware.“ Typical exam ...
Chapter 16: Distributed Operating Systems
... Transferring data from remote machines to local machines, via the File Transfer Protocol (FTP) mechanism ...
... Transferring data from remote machines to local machines, via the File Transfer Protocol (FTP) mechanism ...
Ch 1
... Computer-System Operation I/O devices and the CPU can execute concurrently Each device controller is in charge of a particular device type Each device controller has a local buffer CPU moves data from/to main memory to/from local buffers I/O is from the device to local buffer of controlle ...
... Computer-System Operation I/O devices and the CPU can execute concurrently Each device controller is in charge of a particular device type Each device controller has a local buffer CPU moves data from/to main memory to/from local buffers I/O is from the device to local buffer of controlle ...
What is an Operating System?
... Memory management of I/O including buffering (storing data temporarily while it is being transferred), caching (storing parts of data in faster storage for performance), spooling (the overlapping of output of one job with input of other jobs) ...
... Memory management of I/O including buffering (storing data temporarily while it is being transferred), caching (storing parts of data in faster storage for performance), spooling (the overlapping of output of one job with input of other jobs) ...
Silberschatz/7e Lecture Notes
... Computer-System Operation I/O devices and the CPU can execute concurrently Each device controller is in charge of a particular device type Each device controller has a local buffer CPU moves data from/to main memory to/from local buffers I/O is from the device to local buffer of controlle ...
... Computer-System Operation I/O devices and the CPU can execute concurrently Each device controller is in charge of a particular device type Each device controller has a local buffer CPU moves data from/to main memory to/from local buffers I/O is from the device to local buffer of controlle ...
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.