[1]翁学军,罗立民,汪家旺.一种电子输运的矢量化Monte Carlo模拟方法[J].东南大学学报(自然科学版),2002,32(2):193-196.[doi:10.3969/j.issn.1001-0505.2002.02.010]
 Weng Xuejun,Luo Limin,Wang Jiawang.Vectorized Monte Carlo simulation on the transport of electrons[J].Journal of Southeast University (Natural Science Edition),2002,32(2):193-196.[doi:10.3969/j.issn.1001-0505.2002.02.010]
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一种电子输运的矢量化Monte Carlo模拟方法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
32
期数:
2002年第2期
页码:
193-196
栏目:
生物医学工程
出版日期:
2002-03-20

文章信息/Info

Title:
Vectorized Monte Carlo simulation on the transport of electrons
作者:
翁学军 罗立民 汪家旺
东南大学生物科学与医学工程系,南京 210096
Author(s):
Weng Xuejun Luo Limin Wang Jiawang
Department of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
关键词:
放射治疗 蒙特卡罗 剂量计算 SSE技术 DPM代码
Keywords:
radiotherapy Monte Carlo dose calculation streaming SIMD extensions DPM
分类号:
R144.1
DOI:
10.3969/j.issn.1001-0505.2002.02.010
摘要:
给出了一种采用SSE(Streaming SIMD Extensions)技术实现矢量化模拟电子在人体组织中输运的蒙特卡罗方法,并对一个计算放疗剂量分布的蒙特卡罗代码DPM进行了实施,将DPM模拟电子的方式由原来的一个个顺序模拟改为一次模拟4个电子,这4个电子进行同一个动作时,这部分程序可借助于SSE指令实现并行处理.计算结果显示:在不增加任何硬件成本的情况下,可以提高计算电子剂量分布的速度1.8倍左右.
Abstract:
With the help of SSE(streaming SIMD Extensions)technology, a vectorized MC(Monte Carlo)code for simulating the transport of electrons in radiotherapy problems is presented, which is based on DPM, a recently developed MC code. The electron transport mechanics of DPM is modified from one by one model to simulating four electrons at one time. In the parts of DPM code, where the four electrons have same actions, parallelism calculation can be achieved by SSE instructions. The result shows a 180% efficiency increase without extra hardware expense.

参考文献/References:

[1] Sempau J,Wilderman S J,Bielajew A F.DPM,a fast accurate Monte Carlo code optimized for photon and electron radiotherapy treatment planning dose calculations[J].Phys Med Biol,2000,45:2263-2291.
[2] Iwan Kawrakow,Matthias Fippel,Klaus Friedrich.3D electron dose calculation using a Voxel based Monte Carlo algorithm(VMC)[J].Med Phys,1996,23(4):445-457.
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[4] Bik A,Girkar M,Grey P and Tian X M.Efficient exploitation of parallelism on Pentium III and Pentium 4 processor-based systems[R].Intel Technology Journal,2001,Q1.http://developer.intel.com/.
[5] Intel Corp.Intel architecture optimization reference manual[R].Intel Corp,1999.http://developer.intel.com/.

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备注/Memo

备注/Memo:
作者简介: 翁学军(1969—),男,博士生; 罗立民(联系人),男,教授,博士生导师,Luo.list@seu.edu.cn.
更新日期/Last Update: 2002-03-20