P. W. Ciarfella, The Totem Protocol Testbed, M.S. Thesis, University of California, Santa Barbara, March 1993. Home/Search Document Details and Download
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Distributed Simulation for a Communication Protocol .. - Chun, Moser.. (Correct)
....the model of the communication medium to multicast messages. 1.1 Motivation The need for a protocol development environment arose during the development of the Totem system [1, 2, 6, 20, 22, 25] at the University of California, Santa Barbara. The initial protocol development environment for Totem [12, 13] provided a centralized simulator that allows a developer to monitor and control protocol execution for each processor in a single LAN. The user can single step protocol execution and inject faults into the system. A graphical user interface (GUI) monitor [17, 18] was added to the development ....
....on which the PMs communicate. the future, causing it to miss an event generated by a slower PM. This property lets us avoid the rollback (and its cascading effect) of local virtual time as in Time Warp. Details of the CMM state machine, flow of execution, and scheduling algorithm can be found in [12]. 3.2 The Processor Model The PMs, like the CMM, execute as individual processes on a single Unix workstation. Processor failures during protocol execution are simulated by simply killing PM processes. Likewise, new or recovering processors are simulated by (re)starting new PMs. A PM is composed ....
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P. W. Ciarfella, The Totem Protocol Testbed, M.S. Thesis, University of California, Santa Barbara, March 1993.
Applying Distributed Simulation to a Communication Protocol . . . - Chun, al. (Correct)
....of the communication medium to pass messages. Motivation The need for a protocol development environment arose during the development of the Totem multi protocol system [1] 2] 4] 18] 20] 23] at the University of California, Santa Barbara. The initial protocol development environment for Totem [10][11] provides a centralized simulator that allows a developer to monitor and control protocol execution for each processor in a single LAN. The user can single step protocol execution as well as inject faults into the system. A graphical user interface (GUI) monitor [15] 16] was added to the ....
....advancing too far into the future, causing it to miss an event generated by a slower PM. This property lets us avoid the rollback (and its cascading effect) of Local Virtual Time (LVT) as in Time Warp. Details of the CMM state machine, flow of execution, and scheduling algorithm can be found in [10]. The Processor Model The PMs, like the CMM, execute as individual processes on a single Unix workstation. Processor failures during protocol execution are simulated by simply killing PM processes. Likewise, new or recovering processors are simulated by (re)starting new PMs. A PM is composed of ....
[Article contains additional citation context not shown here]
P. W. Ciarfella, The Totem Protocol Testbed. Master 's Thesis, University of California, Santa Barbara, March 1993.
Virtual Gateways: Performing Distributed Simulations in the Totem.. - Chun (1994) (Correct)
....of a protocol development environment, the main purpose of which was to enable researchers to debug and test the protocol in a controlled environment. The Totem Protocol Development Environment is made up of two primary tools, a graphical network monitor [17] and a discrete event simulator [11][12] The simulation testbed consists of processor and communication medium models. These models execute the Totem protocol, so that behavior exhibited by the system would reflect the protocol s behavior in the real implementation. Using these models in place of the real system components enables ....
....fault tolerant replicated database system developed at the University of California, Santa Barbara. 25 Chapter 3 The Totem Protocol Development Environment A distributed discrete event simulator and a graphical network monitor previously constituted the Totem Protocol Development Environment [11][12] 17] The simulator models a networked system of processors executing the Totem protocol to provide reliable ordered message delivery. The monitor uses data from the simulator to provide a visual display of the current execution of the system, showing current membership status, components of a ....
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P. W. Ciarfella, "The Totem Protocol Testbed." In Master's Thesis, University of California, Santa Barbara, March 1993.
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