?

GDE（GamBet散布式推算扩大）是GamBet（64位）和Xenos（64位）的附加组件，用于密集的蒙特卡洛仿照。拥有高统计精度的巨大推算能够散布在肆意数量的工作推算之间（以及每台推算机上的多个处置器之间）。

?

若何运作

1. 该软件包蕴含两个法式GB_SOW和GB_REAP。

2. GB_SOW蕴含GamBet的全数技术个性。该法式能够装置在肆意数量的32位或64位推算机上，无需许可证。GB_REAP装置在拥有GamBet许可证的64位主推算机上。

3. 用户使用尺度法式设置和测试GamBet运行。而后，将一样的所需输入文件集（GamBet节造剧本、网格界说、电场或磁场文件...）分发给工作人员推算机。

4. GB_SOW在每台工作推算机上从窗口或号令行启动。GB_SOW的多个事俘能够在多处置机械上运行。

5. GB_SOW运行天生一个拥有标始称的单个二进造文件，其中蕴含来自GamBet推算的全数信息（escape particles、剂量、统计...）。用户将输出文件从工作推算机移动到主推算机上的数据文件夹。

6. GB_REAP鉴别指定目录中的全数二进造输入文件，并将它们组合成尺度体式的GamBet输出文件。这些文件能够使用GBView2、GBView3或GenDist进行分析。Escape particles以适当的权沉组合在一个escape文件中。统计和剂量散布的信息被均匀。

?

在此过程中，用户的角色是将文件传输到工作推算机或从工作推算机传输文件。这为配置散布式网络和自动化文件传输留下了矫捷性。只管单一，但GDE概想有几个利益：

• 推算是独立的，不必要同步

• 并行处置没有开销。五台四核推算机能够将产生所需数量的示意图的功夫削减20倍

• 若是一台机械在推算过程中产生故障，来自其他推算机的数据依然有效且有效

• 通过增长更多的显示器来提高推算的正确性是很方便的，不必要重新起头。用户只需创建更多的工人推算机文件。它们被增长到主文件夹中，而后用GB_REAP沉新组合总的集中

• 推算机之间的通讯只通过文件传输。因而，很方便通过公司网络或互联网在肆意地址进行扩大推算

?

?

【英文介绍】

?

GDE (GamBet Distributed-computing Extension) is an add-on component for GamBet (64 bit) and Xenos (64 bit) for intensive Monte Carlo simulations. A huge calculation with high statistical accuracy may be distributed between any number of worker computers (and between multiple processors on each computer).

?

How it works

1.?The package includes two programs, GB_SOW and GB_REAP.

2.?GB_SOW includes all technical features of GamBet. The program may be installed on any number of 32 or 64 bit computers without a license requirement. GB_REAP is installed on a master 64-bit computer with a GamBet license.

3.?The user sets up and tests a GamBet run using the standard programs. Then, identical sets of the required input files (GamBet control script, mesh definition, electric or magnetic field files,...) are distributed to the worker computers.

4.?GB_SOW is launched on each worker computer, either from a window or from the command line. Multiple instances of GB_SOW may run on multiprocessor machines.

5.?The GB_SOW run produces a single binary file with a unique identifying name that contains all information from the GamBet calculation (escape particles, dose, statistics,...). The user moves output files from the worker computers to a data folder on the master computer.

6.?GB_REAP identifies all binary input files in the specified directory and combines them to produce GamBet output files in standard format. These files may be analyzed with GBView2, GBView3 or GenDist. Escape particles are combined in a single escape file with appropriate weightings. Information on statistics and dose distribution is averaged.

?

In the procedure, the user's only role is to transfer files to and from the worker computers. This leaves complete flexibility for configuring the distributed network and automating file transfers. Despite its simplicity, the GDE concept has several advantages:

• Calculations are independent and need not be synchronized.

• There is no overhead for parallel processing. Five quad-core computers can reduce the time to generate a required number of showers by a factor of 20.

• If one machine fails during the computation, data from the other computers is still valid and useful.

• It is easy to improve the accuracy of a calculation by adding more showers without starting from scratch. The user simply creates more worker-computer files. They are added to the master folder and the total collection is recombined with GB_REAP.

• Communication between computers is solely through file transfers. Therefore, it is easy to carry out extended calculations at any locations via a company network or the Internet.

?