Implementing Timing Deltas in MPI Trace and Replay Engine

Aditya Dalmia

MS in CS NCSU

Abstract:

In this project I attempt to implement timing deltas in a trace recording and compression system (MPICTrace). MPICTrace generates trace files of an MPI program. This trace file is compressed within a node, and across nodes. The system also provides functionality to replay a recorded trace program. Both the record and replay of the trace is for analysis of the program and may be used to perform efficient task mapping, which can lead to significant performance gains. The record and replay systems however do not address the task of recording time values for the trace systems. In this paper I present the implementation of the timing deltas in the already existing code.