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Robust and Energy-Efficient Numerical Solvers Towards Reliable and Sustainable Scientific Computations

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Conjugate Gradient Solvers with High Accuracy and Bit-wise Reproducibility between CPU and GPU using Ozaki Scheme

Author(s): Daichi Mukunoki, Katsuhisa Ozaki, Takeshi Ogita, Roman Iakymchuk
Published in: HPC Asia 2021, 2021

Can we avoid rounding-error estimation in HPC codes and still get trustful results?

Author(s): Fabienne Jézéquel, Stef Graillat, Daichi Mukunoki, Toshiyuki Imamura, Roman Iakymchuk
Published in: NSV2020 workshop, 2020

Numerical Reproducibility based on Minimal-Precision Validation

Author(s): Imamura, Toshiyuki; Mukunoki, Daichi; Iakymchuk, Roman; Jézéquel, Fabienne; Graillat, Stef
Published in:, Issue In the CRE19 workshop at SC19, 2019

Reproducibility of parallel preconditioned conjugate gradient in hybrid programming environments

Author(s): Roman Iakymchuk, Maria Barreda Vayá, Stef Graillat, José I Aliaga, Enrique S Quintana-Ortí
Published in: The International Journal of High Performance Computing Applications, Issue 34/5, 2020, Page(s) 502-518, ISSN 1094-3420
DOI: 10.1177/1094342020932650

Reproducibility strategies for parallel Preconditioned Conjugate Gradient

Author(s): Roman Iakymchuk, Maria Barreda, Matthias Wiesenberger, José I. Aliaga, Enrique S. Quintana-Ortí
Published in: Journal of Computational and Applied Mathematics, Issue 371, 2020, Page(s) 112697, ISSN 0377-0427
DOI: 10.1016/

Minimal-Precision Computing for High-Performance, Energy-Efficient, and Reliable Computations

Author(s): Daichi Mukunoki, Toshiyuki Imamura, Yiyu Tan, Atsushi Koshiba, Jens Huthmann, Kentaro Sano, Fabienne Jézéquel, Stef Graillat, Roman Iakymchuk, Norihisa Fujita, Taisuke Boku
Published in: Research Posters at SC19, 2019

White Paper from Workshop on Large-scale Parallel Numerical Computing Technology (LSPANC 2020): HPC and Computer Arithmetic toward Minimal-Precision Computing

Author(s): Roman Iakymchuk, Daichi Mukunoki, Artur Podobas, Fabienne Jézéquel, Toshiyuki Imamura, Norihisa Fujita, Jens Huthmann, Shuhei Kudo, Yiyu Tan, Jens Domke, Kai Torben Ohlhus, Takeshi Fukaya, Takeo Hoshi, Yuki Murakami, Maho Nakata, Takeshi Ogita, Kentaro Sano, Taisuke Boku
Published in: 2020

Optimizing Precision for High-Performance, Robust, and Energy-Efficient Computations

Author(s): Taisuke Boku, Norihisa Fujita, Stef Graillat, Jens Huthmann, Roman Iakymchuk, Toshiyuki Imamura, Fabienne Jézéquel, Atsushi Koshiba, Daichi Mukunoki, Kentaro Sano, Yiyu Tan
Published in: Research Posters at International Conference on High Performance Computing in Asia-Pacific Region, 2020