Fault Tolerance using Live Execution Replay in Virtual Machines

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• Bharath Venkatakrishnan, University of Cambridge
• Tuesday 10 February 2009, 13:00-13:30
• Computer Laboratory, William Gates Building, Room FW11.

If you have a question about this talk, please contact Stephen Kell.

This talk is about using virtual machines to achieve tolerance to hardware faults by replaying live execution. Our system consists of a master virtual machine and a set of slaves which are at a synchronized state and execute the instructions independently of one another. The overall output of the system is determined as a result of an voting process by the individual virtual machines. We use an instruction stream synchronizer to accurately transmit and execute the instruction on the set of VMs. The system is still being built and is hence not yet evaluated. The talk is more about the experiences that we have had so far in building the system.

This talk is part of the Computer Laboratory NetOS Group Talklets series.

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