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Platform independent profiling of a QCD code

Marina Krstic Marinkovic 1, 2 Luka Stanisic 3 
3 STORM - STatic Optimizations, Runtime Methods
LaBRI - Laboratoire Bordelais de Recherche en Informatique, Inria Bordeaux - Sud-Ouest
Abstract : The supercomputing platforms available for high performance computing based research evolve at a great rate. However, this rapid development of novel technologies requires constant adaptations and optimizations of the existing codes for each new machine architecture. In such context, minimizing time of efficiently porting the code on a new platform is of crucial importance. A possible solution for this common challenge is to use simulations of the application that can assist in detecting performance bottlenecks. Due to prohibitive costs of classical cycle-accurate simulators, coarse-grain simulations are more suitable for large parallel and distributed systems. We present a procedure of implementing the profiling for openQCD code [1] through simulation, which will enable the global reduction of the cost of profiling and optimizing this code commonly used in the lattice QCD community. Our approach is based on well-known SimGrid simulator [2], which allows for fast and accurate performance predictions of HPC codes. Additionally, accurate estimations of the program behavior on some future machines, not yet accessible to us, are anticipated.
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Submitted on : Wednesday, February 22, 2017 - 4:47:48 PM
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  • HAL Id : hal-01474342, version 1
  • ARXIV : 1702.06865



Marina Krstic Marinkovic, Luka Stanisic. Platform independent profiling of a QCD code. Lattice 2016 - 34th annual International Symposium on Lattice Field Theory, Jul 2016, Southampton, United Kingdom. pp.1-7. ⟨hal-01474342⟩



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