Improved algorithms for synchronizing computer network clocks
IEEE/ACM Transactions on Networking (TON)
On efficiently implementing global time for performance evaluation on multiprocessor systems
Journal of Parallel and Distributed Computing
One-way delay estimation using network-wide measurements
IEEE/ACM Transactions on Networking (TON) - Special issue on networking and information theory
Network classless time protocol based on clock offset optimization
IEEE/ACM Transactions on Networking (TON)
Timestamp synchronization for event traces of large-scale message-passing applications
PVM/MPI'07 Proceedings of the 14th European conference on Recent Advances in Parallel Virtual Machine and Message Passing Interface
Accurate offline synchronization of distributed traces using kernel-level events
ACM SIGOPS Operating Systems Review
Extending the scope of the controlled logical clock
Cluster Computing
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Performance analysis and optimization is an important part of the development cycle of HPC applications. Among other prerequisites, it relies on highly precise timers, that are commonly not sufficiently synchronized, especially on distributed systems. Therefore, this paper presents a novel timer synchronization scheme especially adapted to parallel event tracing. It consists of two parts. Firstly, recording synchronization information during run-time and, secondly, subsequent correction, i.e. transformation of asynchronous local time stamps to synchronous global time stamps.