Network Planning & Management
... based charging, where customers pay a fixed subscription fee for the basic subscription and in addition pays for the amount of data transmitted. In order to support volume based accounting it is needed to have a data collection system which can reliably keep track of the volume of data transmitted b ...
... based charging, where customers pay a fixed subscription fee for the basic subscription and in addition pays for the amount of data transmitted. In order to support volume based accounting it is needed to have a data collection system which can reliably keep track of the volume of data transmitted b ...
Scale and Performance in the Denali Isolation Kernel
... thousands on a single machine. As such, the memory footprint (including the kernel metadata) must be minimized. Since the set of all unpopular services won’t fit in memory, the kernel must treat memory as a cache of popular services, swapping inactive services to disk. It will also have a poor hit r ...
... thousands on a single machine. As such, the memory footprint (including the kernel metadata) must be minimized. Since the set of all unpopular services won’t fit in memory, the kernel must treat memory as a cache of popular services, swapping inactive services to disk. It will also have a poor hit r ...
Chapter 1: Introduction to Computers
... o command-line (DOS) interface o graphical (Windows) interface ...
... o command-line (DOS) interface o graphical (Windows) interface ...
Design of OSes
... • Programming interface to services provided by the OS • Typically written in a high-level language (C or C++) • Mostly accessed by programs using APIs • Three most common APIs: – Win32 API for Windows – POSIX API for POSIX-based systems (UNIX, Linux, Mac OS X) – Java API for the Java virtual machin ...
... • Programming interface to services provided by the OS • Typically written in a high-level language (C or C++) • Mostly accessed by programs using APIs • Three most common APIs: – Win32 API for Windows – POSIX API for POSIX-based systems (UNIX, Linux, Mac OS X) – Java API for the Java virtual machin ...
Downlaod File
... Multitasking is the logical extension of multiprogramming. The concept of multitasking is quite similar to multiprogramming but difference is that the switching between jobs occurs so frequently that the users can interact with each program while it is running. A time-shared operating system uses CP ...
... Multitasking is the logical extension of multiprogramming. The concept of multitasking is quite similar to multiprogramming but difference is that the switching between jobs occurs so frequently that the users can interact with each program while it is running. A time-shared operating system uses CP ...
SCRAMNet+ - Curtiss-Wright Defense Solutions
... The SCRAMNet+ Network’s ring topology can be expanded up to 256 nodes to create a powerful multiprocessor computing system, with complete host-processor and operating system independence at each node. To utilize the replicated shared-memory concept, distributed processes map their global data struct ...
... The SCRAMNet+ Network’s ring topology can be expanded up to 256 nodes to create a powerful multiprocessor computing system, with complete host-processor and operating system independence at each node. To utilize the replicated shared-memory concept, distributed processes map their global data struct ...
Brightwell-FASTOS-July
... – Consumes less than 1% of compute node memory – Four different execution modes for managing dual processors – Portals 2.0 • High-performance message passing • Avoid buffering and memory copies • Supports multiple user-level libraries (MPI, Intel N/X, Vertex, etc.) ...
... – Consumes less than 1% of compute node memory – Four different execution modes for managing dual processors – Portals 2.0 • High-performance message passing • Avoid buffering and memory copies • Supports multiple user-level libraries (MPI, Intel N/X, Vertex, etc.) ...
Course Introduction - Washington University in St. Louis
... Course project will involve (requires) a substantial modification ...
... Course project will involve (requires) a substantial modification ...
What is Operating System (OS)
... input/output devices are some examples on resources. One type of resource may have several instances. For example, if you have two printers, and you don’t care which printer prints what, you have two instances of the printer resource. If, however, one of the printers is a colour printer and the othe ...
... input/output devices are some examples on resources. One type of resource may have several instances. For example, if you have two printers, and you don’t care which printer prints what, you have two instances of the printer resource. If, however, one of the printers is a colour printer and the othe ...
Installing guest operating systems on VMWare and Linux Kernel
... Installing guest operating systems on Linux Kernel-based Virtual Machine (KVM) virtual servers To install a quest operating system on a KVM virtual server, follow the steps in the Installing guest operating systems on Linux Kernel-based Virtual Machine (KVM) virtual servers quick start guide, which ...
... Installing guest operating systems on Linux Kernel-based Virtual Machine (KVM) virtual servers To install a quest operating system on a KVM virtual server, follow the steps in the Installing guest operating systems on Linux Kernel-based Virtual Machine (KVM) virtual servers quick start guide, which ...
Mobile Applications and Web Services
... − Contiki realises the separation of concern of the basic system support form the rest of the dynamically loadable and programmable services (called processes). − The services communicate with each other through the kernel by posting events. − The ContikiOS kernel does not provide any hardware abstr ...
... − Contiki realises the separation of concern of the basic system support form the rest of the dynamically loadable and programmable services (called processes). − The services communicate with each other through the kernel by posting events. − The ContikiOS kernel does not provide any hardware abstr ...
The Datacenter Needs an Operating System
... RESOURCE SHARING “ To solve these interaction problems we would like to have a computer made simultaneously available to many users in a manner somewhat like a telephone exchange. Each user would be able to use a console at his own pace and without concern for the activity of others using the syste ...
... RESOURCE SHARING “ To solve these interaction problems we would like to have a computer made simultaneously available to many users in a manner somewhat like a telephone exchange. Each user would be able to use a console at his own pace and without concern for the activity of others using the syste ...
THE DATACENTER NEEDS AN OPERATING SYSTEM
... RESOURCE SHARING “ To solve these interaction problems we would like to have a computer made simultaneously available to many users in a manner somewhat like a telephone exchange. Each user would be able to use a console at his own pace and without concern for the activity of others using the syste ...
... RESOURCE SHARING “ To solve these interaction problems we would like to have a computer made simultaneously available to many users in a manner somewhat like a telephone exchange. Each user would be able to use a console at his own pace and without concern for the activity of others using the syste ...
ppt
... Interprocess Communication Mach’s overriding principle is to be a “simple, extensible kernel, concentrating on ...
... Interprocess Communication Mach’s overriding principle is to be a “simple, extensible kernel, concentrating on ...
CS3161 Operating System Principles
... co-ordination between processors to avoid processor idle or overloading and allowing workloads to be shared dynamically; Example: WindowsNT (Version 4) support 4-way (processors) symmetric multiprocessing. Example : SUN OS Version 5 (Solaris 2) support symmetric multiprocessing (SMP). Asymmetric mul ...
... co-ordination between processors to avoid processor idle or overloading and allowing workloads to be shared dynamically; Example: WindowsNT (Version 4) support 4-way (processors) symmetric multiprocessing. Example : SUN OS Version 5 (Solaris 2) support symmetric multiprocessing (SMP). Asymmetric mul ...
Chapter 1 Computer Basics
... • It resides in RAM. • It includes BIOS, which manages the essential peripherals. ...
... • It resides in RAM. • It includes BIOS, which manages the essential peripherals. ...
GC University Lahore
... Course Instructor: Saeed ur Rehman Turk Course Description This course aims to familiarize students with in-depth concepts of theoretical and applied nature of Operating Systems. All modern high performance computer systems are managed by robust, secure and scalable operating systems. Modern high-en ...
... Course Instructor: Saeed ur Rehman Turk Course Description This course aims to familiarize students with in-depth concepts of theoretical and applied nature of Operating Systems. All modern high performance computer systems are managed by robust, secure and scalable operating systems. Modern high-en ...
Module 3: Operating
... – File backup on stable (nonvolatile) storage media. Operating System Concepts ...
... – File backup on stable (nonvolatile) storage media. Operating System Concepts ...
What is an Operating System?
... A job swapped in and out of memory to the disk. On-line communication between the user and the system is provided; when the operating system finishes the execution of one command, it seeks the next control statement from the user s keyboard. On-line system must be available for users to access data ...
... A job swapped in and out of memory to the disk. On-line communication between the user and the system is provided; when the operating system finishes the execution of one command, it seeks the next control statement from the user s keyboard. On-line system must be available for users to access data ...
Document
... – Conserving battery life for long term unattended operation – Developing distributed algorithms for self-organization • Communication and data routing between nodes • Maintain scalability as the number of nodes in the network grow • Resilience to dynamic changes (e.g., failures) ...
... – Conserving battery life for long term unattended operation – Developing distributed algorithms for self-organization • Communication and data routing between nodes • Maintain scalability as the number of nodes in the network grow • Resilience to dynamic changes (e.g., failures) ...
Shayne Cardwell
... configuration of large clustered storage systems quick and simple. Key management interface features ...
... configuration of large clustered storage systems quick and simple. Key management interface features ...
OS Services #1 File
... the operating-system design. One approach is for the program to ask the user for the names of the two files. In an interactive system, this approach will require a sequence of system calls, first to write a prompting message on the screen, and then to read from the keyboard the characters that defin ...
... the operating-system design. One approach is for the program to ask the user for the names of the two files. In an interactive system, this approach will require a sequence of system calls, first to write a prompting message on the screen, and then to read from the keyboard the characters that defin ...
Distributed Computing Systems
... Cluster Computing: The Journal of networks, software tools and applications, Editor-in-chief, Salim Hariri, Springler Journals and Conference Proceedings (Symposium on High Performance Distributed Computing, Cluster Computing Journal, IEEE Transactions on Parallel and Distributed Systems, Journal of ...
... Cluster Computing: The Journal of networks, software tools and applications, Editor-in-chief, Salim Hariri, Springler Journals and Conference Proceedings (Symposium on High Performance Distributed Computing, Cluster Computing Journal, IEEE Transactions on Parallel and Distributed Systems, Journal of ...
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.