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Reproducible Triangular Solvers for High-Performance Computing
Acte de colloque   Open Access

Reproducible Triangular Solvers for High-Performance Computing

Roman Iakymchuk, David Defour, Caroline Collange et Stef Graillat
2015 12th International Conference on Information Technology - New Generations, pp.353-358
2015 12th International Conference on Information Technology - New Generations (Las Vegas, NV, United States, 13/04/2015–15/04/2015)
01/06/2015

Résumé

Error-free transforma-tions Reproducibility Triangular linear system GPU accelerators Superaccumulator Substitution algorithm
On modern parallel architectures, floating-point computations may become non-deterministic and, therefore, non-reproducible mainly due to non-associativity of floating-point operations. We propose an algorithm to solve dense triangular systems by leveraging the standard parallel triangular solver and our, recently introduced, multi-level exact summation approach. Finally, we present implementations of the proposed fast repro-ducible triangular solver and results on recent NVIDIA GPUs.

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