Optimization of mixed-precision iterative refinement using parallelized direct methods
Optimization of mixed-precision iterative refinement using parallelized direct methods
复制标题
使用并行直接方法优化混合精度迭代细化
DOI:
10.1109/iceet56468.2022.10007230
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Kouya Tomonori
中科院分区:
文献类型:
--
作者:
H. Sone;Y. Tamura;and S. Yamada;伊藤綾音,照井章;Kouya Tomonori
Solving a linear system of equations is one of the most critical tasks in scientific computing, which can be performed using the LINPACK test to evaluate TOP500 supercomputers. We have already implemented SIMDized basic linear computation with AVX2 and confirmed that it performs well via benchmark tests in the x86-64 computing environment, demonstrating that SIMDized can be used to accelerate LU decomposition. In this study, it is further demonstrated that parallelized SIMDized LU decomposition with OpenMP is faster than the serial version, and that the mixed-precision iterative refinement used to obtain quad-double (QD, 212-bit mantissa) approximation is optimizable. As a result, the combination of double-double (DD, 106 bits mantissa) and QD arithmetic for the iterative refinement process is more efficient than the DDMPFR 212-bit combination.
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DOI:
10.3233/apc200069
发表时间:
2019
期刊:
International Conference on Parallel Computing
影响因子:
--
作者:
Hotaka Yagi;E. Ishiwata;H. Hasegawa
通讯作者:
H. Hasegawa
DOI:
10.1109/arith51176.2021.00021
发表时间:
2021
期刊:
2021 IEEE 28th Symposium on Computer Arithmetic (ARITH)
影响因子:
--
作者:
Kouya Tomonori
通讯作者:
Kouya Tomonori
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
T. Kouya
通讯作者:
T. Kouya
影响因子:
3.7
作者:
Nicolas Fabiano;J. Muller;Joris Picot
通讯作者:
Joris Picot