ppt - ICS
... TAKEOVER: If a node doesn't receive an UPDATE message from one of its neighbors for a long period, then it takes the zone (recovery). ...
... TAKEOVER: If a node doesn't receive an UPDATE message from one of its neighbors for a long period, then it takes the zone (recovery). ...
Operating Systems Operating System (OS) CS 217
... Operating System (OS) • Provides each process with a virtual machine Promises each program the illusion of having whole machine to itself ...
... Operating System (OS) • Provides each process with a virtual machine Promises each program the illusion of having whole machine to itself ...
slides - Embedded System and Wireless Networking Lab National
... Four Components of a Computer System (2/2) Hardware – provides basic computing resources. CPU, memory, I/O devices. Operating system – controls and coordinates use ...
... Four Components of a Computer System (2/2) Hardware – provides basic computing resources. CPU, memory, I/O devices. Operating system – controls and coordinates use ...
PPT - Surendar Chandra
... those tradeoffs are and make sure that your code works well with them Row-major ordering means certain types of memory accesses are good ...
... those tradeoffs are and make sure that your code works well with them Row-major ordering means certain types of memory accesses are good ...
Scalable Multiprocessors
... • No deadlock issue • Reliability/flow control/in-order delivery are done at the TCP layer? • The network layer (IP) provides best effort service. – IP is done in the software as well. ...
... • No deadlock issue • Reliability/flow control/in-order delivery are done at the TCP layer? • The network layer (IP) provides best effort service. – IP is done in the software as well. ...
unit 1 operating system for parallel computer
... This restriction may be relaxed by having more than one processors capable of running the kernel and allowing additional capability by which the master may float among the various processors capable of running the kernel. 3) Multi-threaded UNIX kernel: We know that threads are light-weight processor ...
... This restriction may be relaxed by having more than one processors capable of running the kernel and allowing additional capability by which the master may float among the various processors capable of running the kernel. 3) Multi-threaded UNIX kernel: We know that threads are light-weight processor ...
System Calls,Kernel Mode, and Process
... As a process executes, it changes state! ❖ new: The process is being created! ❖ ready: The process is waiting to be assigned to a processor! ❖ running: Instructions are being executed! ❖ waiting: The process is waiting for some event to occur! ❖ terminated: The process has finished execution ...
... As a process executes, it changes state! ❖ new: The process is being created! ❖ ready: The process is waiting to be assigned to a processor! ❖ running: Instructions are being executed! ❖ waiting: The process is waiting for some event to occur! ❖ terminated: The process has finished execution ...
COS 318: Operating Systems Overview Kai Li Computer Science Department
... Examples that are not provided at user level System calls: file open, close, read and write Control the CPU so that users won’t stuck by running ...
... Examples that are not provided at user level System calls: file open, close, read and write Control the CPU so that users won’t stuck by running ...
Providing a Single System Image
... • The provision of a SSI means that – application developers see the whole cluster as a single powerful and reliable computer rather than as a set of personal computers connected by a network, and – where resources are added removed or reconfigured automatically COSET - Saint-Malo - June 2004 ...
... • The provision of a SSI means that – application developers see the whole cluster as a single powerful and reliable computer rather than as a set of personal computers connected by a network, and – where resources are added removed or reconfigured automatically COSET - Saint-Malo - June 2004 ...
Towards Wireless Overlay Network Architectures
... There’s a universe of people out there who have a much better idea than we do of what key applications are, so why not give those folks the opportunity to realize them. … The smarts have to be buried in the ‘middleware’ of the network, but that is going to change as more-capable user equipment is di ...
... There’s a universe of people out there who have a much better idea than we do of what key applications are, so why not give those folks the opportunity to realize them. … The smarts have to be buried in the ‘middleware’ of the network, but that is going to change as more-capable user equipment is di ...
MachOs-by-Doug-Hill-Liza-Hill-Josh-Mickley-Alex
... Concept of the Mach Kernel • Developed by Carnegie Mellon University from ...
... Concept of the Mach Kernel • Developed by Carnegie Mellon University from ...
CITS2002 Systems Programming An Introduction to Operating
... operating system monitors oversaw the execution of programs. As with modern operating systems, there was the need to: protect the operating system from the program, protect programs from themselves, protect programs from each other, and constrain data access to the correct program(s). Until system r ...
... operating system monitors oversaw the execution of programs. As with modern operating systems, there was the need to: protect the operating system from the program, protect programs from themselves, protect programs from each other, and constrain data access to the correct program(s). Until system r ...
Building an eGovernment Knowledge Platform
... Solve computing problems of users (compilers, database systems, video games, business programs such as banking software). ...
... Solve computing problems of users (compilers, database systems, video games, business programs such as banking software). ...
CarNet - Disco Lab - Rutgers University
... •IP connectivity to the Internet is an important goal of CarNet •Each Grid node is given an IP address, a subnet mask, and the IP address of the default router – the Grid-to-Internet gateway •Wireless nodes use a hash of their IP address as their Grid ID •Grid node to Grid node – a simple location q ...
... •IP connectivity to the Internet is an important goal of CarNet •Each Grid node is given an IP address, a subnet mask, and the IP address of the default router – the Grid-to-Internet gateway •Wireless nodes use a hash of their IP address as their Grid ID •Grid node to Grid node – a simple location q ...
16MCA24 - PESIT South
... This course provides a comprehensive introduction to understand the underlying principles, techniques and approaches which constitute a coherent body of knowledge in operating systems. In particular, the course will consider inherent functionality and processing of program execution . The emphasis o ...
... This course provides a comprehensive introduction to understand the underlying principles, techniques and approaches which constitute a coherent body of knowledge in operating systems. In particular, the course will consider inherent functionality and processing of program execution . The emphasis o ...
Lecture 2
... data from a file), it cannot continue until the request is fulfilled. – The CPU then becomes idle (the job is blocked on the request). ...
... data from a file), it cannot continue until the request is fulfilled. – The CPU then becomes idle (the job is blocked on the request). ...
Operating System
... Multitasking operating system Multiprocessing operating system Multi-user operating system A computer hardware configuration that includes more than one independent processing unit. ...
... Multitasking operating system Multiprocessing operating system Multi-user operating system A computer hardware configuration that includes more than one independent processing unit. ...
Operating Systems
... programming tools, text editors, typesetting tools, and graphical user interfaces based on the X windowing system. X is a standard in academic and scientific computing, but not hitherto common on PCs; it's a complex distributed windowing system on which people implement graphical interfaces like KDE ...
... programming tools, text editors, typesetting tools, and graphical user interfaces based on the X windowing system. X is a standard in academic and scientific computing, but not hitherto common on PCs; it's a complex distributed windowing system on which people implement graphical interfaces like KDE ...
Module 4: Processes
... Protection and security - The owners of information stored in a multiuser or networked computer system may want to control use of that information, concurrent processes should not interfere with each other ...
... Protection and security - The owners of information stored in a multiuser or networked computer system may want to control use of that information, concurrent processes should not interfere with each other ...
Figure 15.1 A distributed multimedia system
... The chapter aims to give the reader an understanding of the advantages and disadvantages of splitting functionality between protection domains (kernel and user-level code) We shall examining the relation between operation system layer and middle layer, and in particular how well the requirement ...
... The chapter aims to give the reader an understanding of the advantages and disadvantages of splitting functionality between protection domains (kernel and user-level code) We shall examining the relation between operation system layer and middle layer, and in particular how well the requirement ...
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.