Lecture Overview Multiple Processors
... Multicomputer Process Scheduling • On a multicomputer, each node has its own memory and its own set of processes – This is very similar to a uniprocessor, so process scheduling ...
... Multicomputer Process Scheduling • On a multicomputer, each node has its own memory and its own set of processes – This is very similar to a uniprocessor, so process scheduling ...
Distributed Systems Architecture Presentation II
... Companies are preferring their system decentralized and distributed, because Distributed System allows companies to have better customer services. – Shareability: Allows systems to use each other’s resources – Expandability: Permits new systems to be added as members of the overall system – Local Au ...
... Companies are preferring their system decentralized and distributed, because Distributed System allows companies to have better customer services. – Shareability: Allows systems to use each other’s resources – Expandability: Permits new systems to be added as members of the overall system – Local Au ...
Najwa Knefati operating system chapter 1
... EX: seven or more devices can be attached to the small computer-systems interface (SCSI) controller. *It maintains some local buffer storage and a set of special-purpose registers. *It moves the data between the peripheral devices that it controls and its local buffer storage. 3- Device driver for e ...
... EX: seven or more devices can be attached to the small computer-systems interface (SCSI) controller. *It maintains some local buffer storage and a set of special-purpose registers. *It moves the data between the peripheral devices that it controls and its local buffer storage. 3- Device driver for e ...
Document
... • Identify the five most essential utilities • Discuss Windows utility programs • Describe device drivers, including printer drivers ...
... • Identify the five most essential utilities • Discuss Windows utility programs • Describe device drivers, including printer drivers ...
PDF
... • For unmodified native Linux applications, there is a “trampoline” – The application traps – Control bounces to a user-level exception handler – The handler calls the modified shared library ...
... • For unmodified native Linux applications, there is a “trampoline” – The application traps – Control bounces to a user-level exception handler – The handler calls the modified shared library ...
PPT
... • On context switch, TLB needs to be flushed • A tagged TLB tags each entry with an address space label, avoiding flushes • A Pentium CPU can emulate a tagged TLB for small address spaces ...
... • On context switch, TLB needs to be flushed • A tagged TLB tags each entry with an address space label, avoiding flushes • A Pentium CPU can emulate a tagged TLB for small address spaces ...
Here is the Power Point Presentation on Chord
... willy-nilly, using a reference to a node on the network, and having a potentially inefficient topology for searching: ...
... willy-nilly, using a reference to a node on the network, and having a potentially inefficient topology for searching: ...
PowerPoint - NYU Computer Science
... Requires changes in IRIX memory layout Flushes TLB when scheduling different virtual CPUs MIPS TLB is tagged (address space ID) Avoids virtualizing ASIDs ...
... Requires changes in IRIX memory layout Flushes TLB when scheduling different virtual CPUs MIPS TLB is tagged (address space ID) Avoids virtualizing ASIDs ...
Operating Systems Overview
... Well defined interfaces: one level can be modified without affecting other levels This decomposes a problem into a number of more manageable sub problems ...
... Well defined interfaces: one level can be modified without affecting other levels This decomposes a problem into a number of more manageable sub problems ...
Summary for chapter 2 OPERATING SYSTEM nAJWA kNEFATI
... If the mechanism is properly separated from policy, it can be used either to support a policy decision that I/O-intensive programs should have priority over CPU-intensive ones or to support the opposite policy Microkernel-based operating systems (Section 2.7.3) take the separation of mechanism and p ...
... If the mechanism is properly separated from policy, it can be used either to support a policy decision that I/O-intensive programs should have priority over CPU-intensive ones or to support the opposite policy Microkernel-based operating systems (Section 2.7.3) take the separation of mechanism and p ...
Figure 15.1 A distributed multimedia system
... The data is stored in replicas at all nodes responsible for the object identified by GUID. remove(GUID) Deletes all references to GUID and the associated data. value = get(GUID) The data associated with GUID is retrieved from one of the nodes responsible it. ...
... The data is stored in replicas at all nodes responsible for the object identified by GUID. remove(GUID) Deletes all references to GUID and the associated data. value = get(GUID) The data associated with GUID is retrieved from one of the nodes responsible it. ...
Syllabus - Jordan University of Science and Technology
... Class lectures, lecture notes, and quizzes are designed to achieve the course objectives. You should read the assigned chapters before class, and participate in class and do whatever it takes for you to grasp this material. Also, ask any question related to O.S. You are responsible for all material ...
... Class lectures, lecture notes, and quizzes are designed to achieve the course objectives. You should read the assigned chapters before class, and participate in class and do whatever it takes for you to grasp this material. Also, ask any question related to O.S. You are responsible for all material ...
Chapter 1
... own address. Main-memory provides storage that can be access directly by the CPU. That is to say for a program to be executed, it must in the main memory. The major activities of an operating system in regard to memory-management are: ...
... own address. Main-memory provides storage that can be access directly by the CPU. That is to say for a program to be executed, it must in the main memory. The major activities of an operating system in regard to memory-management are: ...
System architectures - University of Manitoba
... Services Oriented Architecture Cloud computing and system architectures 3510 Systems Analysis & Design * Bob Travica ...
... Services Oriented Architecture Cloud computing and system architectures 3510 Systems Analysis & Design * Bob Travica ...
Using Information Technology
... • Distributed system - a non-centralized network consisting of several computers and other devices that can communicate with one another ...
... • Distributed system - a non-centralized network consisting of several computers and other devices that can communicate with one another ...
A Robust and Adaptive Communication System for Intelligent
... • Integration of sensing, data processing, and communication in a single, portable, disposable device ...
... • Integration of sensing, data processing, and communication in a single, portable, disposable device ...
Interface Architecture Development
... Works best in highly parallel software applications in which the global data of each application must be accessed frequently by the application and infrequently or never by other applications ...
... Works best in highly parallel software applications in which the global data of each application must be accessed frequently by the application and infrequently or never by other applications ...
Software Concepts in Distributed Systems
... – Geographical scalability problems result from the fact that inter-process communication is no longer instantaneous or reliable: • While delays can be in the order of microseconds in LANs, in WANs they can become hundreds of milliseconds. This means that synchronous communications require a great d ...
... – Geographical scalability problems result from the fact that inter-process communication is no longer instantaneous or reliable: • While delays can be in the order of microseconds in LANs, in WANs they can become hundreds of milliseconds. This means that synchronous communications require a great d ...
Document
... • Tasks run with different user authorities ranging from admin over sub-admin roles to regular users. • Resources are protected by Access Control Lists with different user having different rights. • Many users or background tasks are active at any time. Regular users cannot shutdown the machine beca ...
... • Tasks run with different user authorities ranging from admin over sub-admin roles to regular users. • Resources are protected by Access Control Lists with different user having different rights. • Many users or background tasks are active at any time. Regular users cannot shutdown the machine beca ...
What is an operating system?
... instructions). Concurrent threads may interfere one with another. This leads to the necessity for resource protection by using user/supervisor modes. For example, the I/O instructions are privileged, it can be run only in supervisor mode. The system calls are making the transfer from user mode into ...
... instructions). Concurrent threads may interfere one with another. This leads to the necessity for resource protection by using user/supervisor modes. For example, the I/O instructions are privileged, it can be run only in supervisor mode. The system calls are making the transfer from user mode into ...
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.