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Nagaya, Yasunobu; Adachi, Masaaki*
Proceedings of International Conference on Mathematics & Computational Methods Applied to Nuclear Science & Engineering (M&C 2017) (USB Flash Drive), 6 Pages, 2017/04
MVP is a general-purpose Monte Carlo code for neutron and photon transport calculations based on the continuous-energy method. To speed up the MVP code, hybrid parallelization is applied with a message passing interface library MPI and a shared-memory multiprocessing library OpenMP. The performance test has been done for an eigenvalue calculation of a fast reactor subassembly, a fixed-source calculation of a neutron/photon coupled problem and a PWR full core model. Comparisons has been made for MPI only with 4 processes and hybrid parallelism with 4 processes 
3 threads. As a result, the hybrid parallelism yields the reduction of elapsed time by 16% to 34% and the used memories are almost the same.
Furuta, Takuya; Sato, Tatsuhiko; Ogawa, Tatsuhiko; Niita, Koji*; Ishikawa, Kenichi*; Noda, Shigeho*; Takagi, Shu*; Maeyama, Takuya*; Fukunishi, Nobuhisa*; Fukasaku, Kazuaki*; et al.
Proceedings of Joint International Conference on Mathematics and Computation, Supercomputing in Nuclear Applications and the Monte Carlo Method (M&C + SNA + MC 2015) (CD-ROM), 9 Pages, 2015/04
In Particle and Heavy Ion Transport code System PHITS, two parallel computing functions are prepared to reduce the computational time. One is the distributed-memory parallelization using message passing interface (MPI) and the other is the shared-memory parallelization using OpenMP directives. Each function has advantages and disadvantages, and thus, by adopting both functions in PHITS, it is possible to conduct parallel computing suited for needs of users. It is also possible to conduct the hybrid parallelization by the intra-node OpenMP parallelization and the inter-node MPI parallelization in supercomputer systems. Each parallelization functions were explained together with some application results obtained using a workstation and a supercomputer system, K computer at RIKEN.
Yatake, Yoichi*; Kume, Etsuo; Kawai, Wataru*; Nemoto, Toshiyuki*; Kawasaki, Nobuo*; Adachi, Masaaki*; Ishizuki, Shigeru*; Ogasawara, Shinobu*
JAERI-Data/Code 2000-038, 57 Pages, 2000/12
JAERI-Data-Code-2000-038.pdf:2.3MB
no abstracts in English
Furuno, Akiko; Yamazawa, Hiromi; Lee, S.; Tsujita, Yuichi; Takemiya, Hiroshi*; Chino, Masamichi
Proceedings of 4th International Conference on Supercomputing in Nuclear Applications (SNA 2000) (CD-ROM), 7 Pages, 2000/09
no abstracts in English
Ishizuki, Shigeru*; Ogasawara, Shinobu*; Kawai, Wataru*; Nemoto, Toshiyuki*; Kume, Etsuo; Adachi, Masaaki*; Kawasaki, Nobuo*; Yatake, Yoichi*
JAERI-Data/Code 2000-018, p.217 - 0, 2000/03
JAERI-Data-Code-2000-018.pdf:6.35MB
no abstracts in English
Yatake, Yoichi*; Adachi, Masaaki*; Kume, Etsuo; Kawai, Wataru*; Kawasaki, Nobuo*; Nemoto, Toshiyuki*; Ishizuki, Shigeru*; Ogasawara, Shinobu*
JAERI-Data/Code 2000-016, p.43 - 0, 2000/03
JAERI-Data-Code-2000-016.pdf:1.36MB
no abstracts in English
Watanabe, Tadashi; Ebihara, Kenishi; Kato, Katsumi*
JAERI-Data/Code 99-029, 38 Pages, 1999/05
JAERI-Data-Code-99-029.pdf:1.58MB
no abstracts in English
Watanabe, Tadashi; Ebihara, Kenishi; Kaburaki, Hideo
JAERI-Data/Code 97-056, 32 Pages, 1998/01
JAERI-Data-Code-97-056.pdf:1.57MB
no abstracts in English
; Takemiya, Hiroshi*
Keisan Kagaku, p.94 - 104, 1998/00
no abstracts in English
Takemiya, Hiroshi*; Higuchi, Kenji; *
Modeling and Simulation Based Engineering, p.497 - 502, 1998/00
no abstracts in English
*; *; *; *; *; *; Harada, Hiro; ; Kume, Etsuo;
JAERI-Data/Code 97-052, 160 Pages, 1997/12
JAERI-Data-Code-97-052.pdf:4.17MB
no abstracts in English
Yamagiwa, Mitsuru; ; *; M.Elia*
JAERI-Data/Code 97-032, 15 Pages, 1997/07
JAERI-Data-Code-97-032.pdf:0.59MB
no abstracts in English
*; *; *; Kume, Etsuo;
JAERI-Tech 97-017, 156 Pages, 1997/03
no abstracts in English
*; *; *; *; Harada, Hiro; Gorai, Kazuo; ; ;
JAERI-Data/Code 96-022, 362 Pages, 1996/07
JAERI-Data-Code-96-022.pdf:8.17MB
no abstracts in English
Takemiya, Hiroshi*; *; *
JAERI-Data/Code 96-010, 52 Pages, 1996/03
JAERI-Data-Code-96-010.pdf:2.28MB
no abstracts in English
P.I.Yazid*; ; Masukawa, Fumihiro; Naito, Yoshitaka
JAERI-M 93-230, 78 Pages, 1993/12
no abstracts in English