//TRACE: Parallel Trace Replay with Approximate Causal Events

//TRACE1 is a new approach for extracting and replaying traces of parallel applications to recreate their I/O behavior. Its tracing engine automatically discovers inter-node data dependencies and inter-I/O compute times for each node (process) in an application. This information is reflected in per-node annotated I/O traces. Such annotation allows a parallel replayer to closely mimic the behavior of a traced application across a variety of storage systems. When compared to other replay mechanisms, //TRACE offers significant gains in replay accuracy. Overall, the average replay error for the parallel applications evaluated in this paper is below 6%.

• Type: Conference
• Year: 2007
• Where: FAST
• Authors: Michael P. Mesnier, Matthew Wachs, Raja R. Sambasivan, Julio López, James Hendricks, Gregory R. Ganger, David R. O'Hallaron
• Keywords: Average Replay Error, FAST 2007, Operating System, Parallel Applications, Per-node Annotated I/o