CSC420 สัปดาห์ที่ 2
... 3. Terminate jobs involved in deadlock one at a time, checking to see if deadlock is eliminated after each removal, until it has been resolved. 4. Have job keep record (snapshot) of its progress so it can be interrupted and then continued without starting again from the beginning of its execution. 5 ...
... 3. Terminate jobs involved in deadlock one at a time, checking to see if deadlock is eliminated after each removal, until it has been resolved. 4. Have job keep record (snapshot) of its progress so it can be interrupted and then continued without starting again from the beginning of its execution. 5 ...
3.4.1 Shared-Memory Systems
... be executing in parallel with the others. Notice that such a speedup can be achieved only if the computer has multiple processing elements (such as CPUs or I/O channels). - Modularity. We may want to construct the system in a modular fashion, dividing the system functions into separate processes or ...
... be executing in parallel with the others. Notice that such a speedup can be achieved only if the computer has multiple processing elements (such as CPUs or I/O channels). - Modularity. We may want to construct the system in a modular fashion, dividing the system functions into separate processes or ...
WP4-Gridification-overlaps-20011127
... authorization and user mapping done too early in process ...
... authorization and user mapping done too early in process ...
LectureNotes - Cabrillo College
... A setup program for configuring system options Configuration information stored in a special kind of non-volatile RAM called the CMOS RAM ...
... A setup program for configuring system options Configuration information stored in a special kind of non-volatile RAM called the CMOS RAM ...
SKR5800_LectureIntroduction_to_Globus
... about resources in the wide area environment. A distributed collection of information servers is accessed by higher-level services that perform resource discovery, configuration and scheduling. ...
... about resources in the wide area environment. A distributed collection of information servers is accessed by higher-level services that perform resource discovery, configuration and scheduling. ...
Broadband-Hamnet formerly HSMM-Mesh
... Any mesh node within wireless range automatically joins the existing mesh and exchanges available routes with all others. If one mesh node has Internet access or contains a NTP (network time protocol) server, all mesh nodes will get a correct date/time in their display As signals grow stronger and f ...
... Any mesh node within wireless range automatically joins the existing mesh and exchanges available routes with all others. If one mesh node has Internet access or contains a NTP (network time protocol) server, all mesh nodes will get a correct date/time in their display As signals grow stronger and f ...
1. design principle
... scientific, engineering and academic communities because of its multi-user, multi-tasking environment, flexibility and portability, electronic email and networking capabilities. But WinNT has been designed mainly for client-server applications. It is often necessary that separate applications runnin ...
... scientific, engineering and academic communities because of its multi-user, multi-tasking environment, flexibility and portability, electronic email and networking capabilities. But WinNT has been designed mainly for client-server applications. It is often necessary that separate applications runnin ...
Monday, 26 November, 2007.
... A process is a program in execution. It is a unit of work within the system. Program is a passive entity, process is an active entity. Process needs resources to accomplish its task CPU, memory, I/O, files Initialization data Process termination requires reclaim of any reusable resources Single- ...
... A process is a program in execution. It is a unit of work within the system. Program is a passive entity, process is an active entity. Process needs resources to accomplish its task CPU, memory, I/O, files Initialization data Process termination requires reclaim of any reusable resources Single- ...
Document
... • Efficient use of resources (shared memory, common OS) • Bad protection and isolation • Maximum Control and Security? ...
... • Efficient use of resources (shared memory, common OS) • Bad protection and isolation • Maximum Control and Security? ...
Computer Systems Architecture Learning Hours Information Sheet
... Corequisites: A pass or better in Diploma in System Analysis & Design or equivalence. Aim: The course covers how programs are represented and executed by modern computers, low-level machine representations of programs and data; an understanding of how computer components influence program performanc ...
... Corequisites: A pass or better in Diploma in System Analysis & Design or equivalence. Aim: The course covers how programs are represented and executed by modern computers, low-level machine representations of programs and data; an understanding of how computer components influence program performanc ...
A Node-Centric Load Balancing Algorithm for Wireless Sensor
... growth space : a measure of the freedom to grow the tree towards this node The growth space of a node is the sum of the number of unmarked neighbors of all the node’s unmarked neighbors minus common links. ...
... growth space : a measure of the freedom to grow the tree towards this node The growth space of a node is the sum of the number of unmarked neighbors of all the node’s unmarked neighbors minus common links. ...
Protection A computer system is a collection of processes and
... As mentioned before, a computer system consists of processes and objects. Each object has a unique identifier in the system, and can be accessed only through well-defined and meaningul operations. For example, a memory segment (object) supports read and write (operations) while a CD-ROM (object) sup ...
... As mentioned before, a computer system consists of processes and objects. Each object has a unique identifier in the system, and can be accessed only through well-defined and meaningul operations. For example, a memory segment (object) supports read and write (operations) while a CD-ROM (object) sup ...
Lec10-OS-process - ECE Users Pages
... Operating System Concepts Process Management Main Memory Management File Management I/O System Management Secondary Management ...
... Operating System Concepts Process Management Main Memory Management File Management I/O System Management Secondary Management ...
Module 4: Processes
... Extensibility (Can easily add new functions--user processes) Flexibility (Can remove functions that are not needed) Portability (Only the small kernel has hardware specific code) Distributed System support (Message passing can generalize to network communications) Object oriented (A good d ...
... Extensibility (Can easily add new functions--user processes) Flexibility (Can remove functions that are not needed) Portability (Only the small kernel has hardware specific code) Distributed System support (Message passing can generalize to network communications) Object oriented (A good d ...
What is an Operating System?
... secondary storage to back up main memory. ? Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. ? The operating system is responsible for the following activities in connection with disk management: ? Free space management ? Storage allocation ...
... secondary storage to back up main memory. ? Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. ? The operating system is responsible for the following activities in connection with disk management: ? Free space management ? Storage allocation ...
Plan 9 from Bell Labs - Department of Physics, Computer Science
... User or process assembles a private view of the system by constructing a file name space that connects the resources. Allows the user to access files that are local or remote in the same manner. When writing a program the user does not need to create code that handles for cases in which the file is ...
... User or process assembles a private view of the system by constructing a file name space that connects the resources. Allows the user to access files that are local or remote in the same manner. When writing a program the user does not need to create code that handles for cases in which the file is ...
Chapter 6 Operating Systems
... information on disk drives and for the organization of that information on the drive. ...
... information on disk drives and for the organization of that information on the drive. ...
An Alliance Based Peering Scheme for P2P Live Media Streaming
... Compare the behavior of BEAM with CS CS (CoolStreaming/DONet) DONet: Data-driven Overlay Network Don’t use any tree, mesh, or any other structures CoolStream: Cooperative Overlay Streaming A practical DONet implementation Node periodically exchanges data availability information with partner ...
... Compare the behavior of BEAM with CS CS (CoolStreaming/DONet) DONet: Data-driven Overlay Network Don’t use any tree, mesh, or any other structures CoolStream: Cooperative Overlay Streaming A practical DONet implementation Node periodically exchanges data availability information with partner ...
SC PE
... Memory Mapped I / O • Memory Mapped I/O – A specific region of the real memory address space is reserved for accessing I/O devices. – Loads and stores directed to these addresses are interpreted by the memory controller as commands sent to an I/O device. ...
... Memory Mapped I / O • Memory Mapped I/O – A specific region of the real memory address space is reserved for accessing I/O devices. – Loads and stores directed to these addresses are interpreted by the memory controller as commands sent to an I/O device. ...
Chord: A Scalable Peer-to-peer Lookup Service for Internet
... nodes • Stabilization is run on every node periodically to check for new nodes • Theorem #4: Once a node can successfully resolve a given query, it will always be able to do so in the future. • Theorem #5: At some time after the last join all successor pointers will be correct. • Theorem #6: If we t ...
... nodes • Stabilization is run on every node periodically to check for new nodes • Theorem #4: Once a node can successfully resolve a given query, it will always be able to do so in the future. • Theorem #5: At some time after the last join all successor pointers will be correct. • Theorem #6: If we t ...
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.