SSG-AT: An auto-tuning method of sparse matrix-vector multiplicataion for semi-structured grids-An adaptation to openfoam

Satoshi Ito; Satoshi Ohshima; Takahiro Katagiri

doi:10.1109/MCSoC.2012.26

SSG-AT: An auto-tuning method of sparse matrix-vector multiplicataion for semi-structured grids-An adaptation to openfoam

Satoshi Ito, Satoshi Ohshima, Takahiro Katagiri

Research output: Contribution to conference › Paper › peer-review

1 Citation (Scopus)

Abstract

We are developing ppOpen-AT, which is an infrastructureof auto-tuning (AT) for ppOpen-HPC. ppOpen-HPC is numerical middleware for post Petascale era. In this study, we propose a new auto-tuning (AT) facility for semi-structured grids in OpenFOAM. We focus on sparse matrix-vector multiplication and the matrix storage formats. Using the features of input data and mesh connectivity, we propose a hybrid storage format that is suitable for semistructured grids. We evaluate the proposed AT facility on the T2K supercomputer and an Intel Xeon cluster. For a typical computational fluid dynamics scenario, we obtain speedup factors of 1.3 on the T2K and 1.84 on the Xeon cluster. These results indicate that the proposed AT method has the potential to select the optimal data format according to features of the input sparse matrix.

Original language	English
Pages	191-197
Number of pages	7
DOIs	https://doi.org/10.1109/MCSoC.2012.26
Publication status	Published - Dec 1 2012
Externally published	Yes
Event	2012 IEEE 6th International Symposium on Embedded Multi-Core Systems on Chips, MCSoC 2012 - Aizu-Wakamatsu, Fukushima, Japan Duration: Sept 20 2012 → Sept 22 2012

Other

Other	2012 IEEE 6th International Symposium on Embedded Multi-Core Systems on Chips, MCSoC 2012
Country/Territory	Japan
City	Aizu-Wakamatsu, Fukushima
Period	9/20/12 → 9/22/12

All Science Journal Classification (ASJC) codes

Hardware and Architecture
Electrical and Electronic Engineering

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10.1109/MCSoC.2012.26

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SSG-AT: An auto-tuning method of sparse matrix-vector multiplicataion for semi-structured grids-An adaptation to openfoam. / Ito, Satoshi; Ohshima, Satoshi; Katagiri, Takahiro.
2012. 191-197 Paper presented at 2012 IEEE 6th International Symposium on Embedded Multi-Core Systems on Chips, MCSoC 2012, Aizu-Wakamatsu, Fukushima, Japan.

Research output: Contribution to conference › Paper › peer-review

Ito, S, Ohshima, S & Katagiri, T 2012, 'SSG-AT: An auto-tuning method of sparse matrix-vector multiplicataion for semi-structured grids-An adaptation to openfoam', Paper presented at 2012 IEEE 6th International Symposium on Embedded Multi-Core Systems on Chips, MCSoC 2012, Aizu-Wakamatsu, Fukushima, Japan, 9/20/12 - 9/22/12 pp. 191-197. https://doi.org/10.1109/MCSoC.2012.26

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SSG-AT: An auto-tuning method of sparse matrix-vector multiplicataion for semi-structured grids-An adaptation to openfoam

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