Novel reinforcement learning-based approaches to reduce loss
... on congestion and hop count (between source and destination) to select paths that improve performance in terms of burst losses and delay. In [9], a passive probing on suboptimal paths is used; the source node sends a small fraction of its traffic on these paths while keeping the probabilities of choo ...
... on congestion and hop count (between source and destination) to select paths that improve performance in terms of burst losses and delay. In [9], a passive probing on suboptimal paths is used; the source node sends a small fraction of its traffic on these paths while keeping the probabilities of choo ...
PDF
... Basic input/output system. To initialize and test compute/storage node hardware components, and to load a boot loader or an operating system from a mass memory device. The BIOS supports UEFI interface. ...
... Basic input/output system. To initialize and test compute/storage node hardware components, and to load a boot loader or an operating system from a mass memory device. The BIOS supports UEFI interface. ...
Document
... Ref: http://userhome.brooklyn.cuny.edu/irudowdky/OperatingSystems.htm & Silberschatz, Gagne, & Galvin, Operating Systems Concepts, 7th ed, Wiley (ch 1-3) ...
... Ref: http://userhome.brooklyn.cuny.edu/irudowdky/OperatingSystems.htm & Silberschatz, Gagne, & Galvin, Operating Systems Concepts, 7th ed, Wiley (ch 1-3) ...
Teme lucrari de diploma –Freescale
... advantages in IP networking, related to flexibility at network and application level, together with more powerful management and control. However the SDN controller implementation as unique entity creates scalability problems in large network environments. Multi-controller SDN implementation of the ...
... advantages in IP networking, related to flexibility at network and application level, together with more powerful management and control. However the SDN controller implementation as unique entity creates scalability problems in large network environments. Multi-controller SDN implementation of the ...
Chapter 4.pdf
... Compared to processes, threads take less time to create or terminate • Switching between two threads within the same process takes less time than a process switch: thread switching happens inside a process and is much faster • Threads can communicate with each other without invoking the kernel (sinc ...
... Compared to processes, threads take less time to create or terminate • Switching between two threads within the same process takes less time than a process switch: thread switching happens inside a process and is much faster • Threads can communicate with each other without invoking the kernel (sinc ...
The Spring Kernel: A New Paradigm for Real
... VVe assume that the Spring system is physically distributed and composed of a network of multiprocessors. Each multiprocessor contains one (or more) application processors, one (or more) system processors, and an I / O subsystem. System processors 1 offioad the scheduling algorithm and other OS over ...
... VVe assume that the Spring system is physically distributed and composed of a network of multiprocessors. Each multiprocessor contains one (or more) application processors, one (or more) system processors, and an I / O subsystem. System processors 1 offioad the scheduling algorithm and other OS over ...
Dancing with Giants: Wimpy Kernels for On-demand Isolated I/O
... Central to on-demand isolation of I/O channels is the notion of the wimpy kernel, which constructs these channels without affecting the underlying TCB; i.e., without modifying its security properties and increasing the verification effort [39, 66]. The wimpy kernel is an add-on trustworthy service t ...
... Central to on-demand isolation of I/O channels is the notion of the wimpy kernel, which constructs these channels without affecting the underlying TCB; i.e., without modifying its security properties and increasing the verification effort [39, 66]. The wimpy kernel is an add-on trustworthy service t ...
c 2009 IEEE. Personal use of this material is permitted. However
... nodes to a fixed destination. However, they do not consider opportunistic forwarding between the mobile nodes. ‘Active’ schemes go further in using nodes to deliver data by assuming control or influence over node movements. Li et al. [32] explore message delivery where nodes can be instructed to mov ...
... nodes to a fixed destination. However, they do not consider opportunistic forwarding between the mobile nodes. ‘Active’ schemes go further in using nodes to deliver data by assuming control or influence over node movements. Li et al. [32] explore message delivery where nodes can be instructed to mov ...
Threads (continued)
... • Deliver signal to specific thread to which it applies • E.g., illegal memory access, divide-by-zero, etc. ...
... • Deliver signal to specific thread to which it applies • E.g., illegal memory access, divide-by-zero, etc. ...
Debugging operating systems with time-traveling virtual
... being debugged. From this vantage point, the programmer can use a debugger to examine and control the execution of the OS without perturbing its state. By time travel, we mean the ability to navigate backward and forward arbitrarily through the execution history of a particular run and to replay arb ...
... being debugged. From this vantage point, the programmer can use a debugger to examine and control the execution of the OS without perturbing its state. By time travel, we mean the ability to navigate backward and forward arbitrarily through the execution history of a particular run and to replay arb ...
8.1 MULTIPROCESSORS
... this property forms the basis of interprocessor communication: one CPU writes some data into memory and another one reads the data out. For the most part, multiprocessor operating systems are just regular operating systems. They handle system calls, do memory management, provide a file system, and m ...
... this property forms the basis of interprocessor communication: one CPU writes some data into memory and another one reads the data out. For the most part, multiprocessor operating systems are just regular operating systems. They handle system calls, do memory management, provide a file system, and m ...
Threads Implementation
... communication to maintain the appropriate number of kernel threads allocated to the application/ • Typically use an intermediate data structure between user and kernel threads – lightweight process (LWP): – Appears to be a virtual processor on which process can schedule user thread to run. – Each LW ...
... communication to maintain the appropriate number of kernel threads allocated to the application/ • Typically use an intermediate data structure between user and kernel threads – lightweight process (LWP): – Appears to be a virtual processor on which process can schedule user thread to run. – Each LW ...
Threads, Introduction to Synchronization
... shared variable (or resource) and must not be concurrently executed by more than one thread ...
... shared variable (or resource) and must not be concurrently executed by more than one thread ...
lecture08_part2_noc
... Credit based • Round trip time between buffer empty and flit arrival • More efficient buffer usage; error control pushed at a higher layer No of credits ...
... Credit based • Round trip time between buffer empty and flit arrival • More efficient buffer usage; error control pushed at a higher layer No of credits ...
SonicWALL Global Management System Datasheet
... forensics capabilities. Real-time and historic data flow reporting — Offers administrators an effective and efficient interface to visually monitor their network in realtime, providing the ability to identify applications and websites with high bandwidth demands, view application usage per user and ...
... forensics capabilities. Real-time and historic data flow reporting — Offers administrators an effective and efficient interface to visually monitor their network in realtime, providing the ability to identify applications and websites with high bandwidth demands, view application usage per user and ...
user-level threads
... • The user-level thread package sees a “virtual” processor(s) – it schedules user-level threads on these virtual processors – each “virtual” processor is implemented by a kernel thread • The big picture: – Create as many kernel threads as there are processors – Create as many user-level threads as t ...
... • The user-level thread package sees a “virtual” processor(s) – it schedules user-level threads on these virtual processors – each “virtual” processor is implemented by a kernel thread • The big picture: – Create as many kernel threads as there are processors – Create as many user-level threads as t ...
Lecture-Review-Process
... and share resources: – Files on disk; Open files (via inherited file descriptors); Terminal, etc. – Kernel-level concurrency ...
... and share resources: – Files on disk; Open files (via inherited file descriptors); Terminal, etc. – Kernel-level concurrency ...
Threads
... • The user-level thread package sees a “virtual” processor(s) – it schedules user-level threads on these virtual processors – each “virtual” processor is implemented by a kernel thread • The big picture: – Create as many kernel threads as there are processors – Create as many user-level threads as t ...
... • The user-level thread package sees a “virtual” processor(s) – it schedules user-level threads on these virtual processors – each “virtual” processor is implemented by a kernel thread • The big picture: – Create as many kernel threads as there are processors – Create as many user-level threads as t ...
"The Performance of Query Control Schemes for the Zone Routing Protocol"
... layer multicasting of messages to peripheral nodes. This approach prevents the routing protocol from accessing route query messages until they arrive at the edge of the routing zone. As we will show later, proper control of the route query process requires that the routing protocol monitor and relay ...
... layer multicasting of messages to peripheral nodes. This approach prevents the routing protocol from accessing route query messages until they arrive at the edge of the routing zone. As we will show later, proper control of the route query process requires that the routing protocol monitor and relay ...
Darrell C. Anderson, Je rey S. Chase, Amin M. Vahdat Duke University Abstract.
... The key bene ts of Slice request routing apply equally to these shared disk systems when untrusted clients are present. First, request routing is a key to incorporating secure network-attached block storage, which allows untrusted clients to address storage objects directly without compromising the ...
... The key bene ts of Slice request routing apply equally to these shared disk systems when untrusted clients are present. First, request routing is a key to incorporating secure network-attached block storage, which allows untrusted clients to address storage objects directly without compromising the ...
AS-aware Relay Selection Mechanism for Multiparty Streaming
... streaming data. These services usually demand bounded delay and high bandwidth. However, current P2P overlay may not fulfil these requirements. Some researchers [1]-[5] have proposed the use of relay nodes to deliver streaming data for improved communication quality. Many efforts [6]-[10] have been ...
... streaming data. These services usually demand bounded delay and high bandwidth. However, current P2P overlay may not fulfil these requirements. Some researchers [1]-[5] have proposed the use of relay nodes to deliver streaming data for improved communication quality. Many efforts [6]-[10] have been ...
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.