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老师您好,我用gromacs建立一个油水界面模型。首先,分别对油相盒子和水相盒子行了NPT 10ns的平衡,对平衡后的盒子(oilnpt6.gro和waternpt6.gro)进行拼接,得到一个油-水-油的界面.
oilnpt6.gro 的盒子大小xyz是:6.00000 6.00000 3.63172,waternpt6.gro 的盒子大小xyz是:6.00000 6.00000 6.41603 nm,拼接得到的all.gro 所加盒子大小是6 6 15.
下边对all.gro跑NPT,各个文件的mdp文件,log文件和提交脚本pbs可见附件:mixnpt6-1.log报错:
Initializing Domain Decomposition on 24 ranks
Dynamic load balancing: auto
Will sort the charge groups at every domain (re)decomposition
Initial maximum inter charge-group distances:
two-body bonded interactions: 3.633 nm, Exclusion, atoms 4081 4099
multi-body bonded interactions: 3.633 nm, Angle, atoms 4081 4099
Minimum cell size due to bonded interactions: 3.997 nm
Maximum distance for 5 constraints, at 120 deg. angles, all-trans: 0.840 nm
Estimated maximum distance required for P-LINCS: 0.840 nm
Guess for relative PME load: 0.17
Will use 20 particle-particle and 4 PME only ranks
This is a guess, check the performance at the end of the log file
Using 4 separate PME ranks, as guessed by mdrun
Scaling the initial minimum size with 1/0.8 (option -dds) = 1.25
Optimizing the DD grid for 20 cells with a minimum initial size of 4.996 nm
The maximum allowed number of cells is: X 1 Y 1 Z 3
-------------------------------------------------------
Program gmx mdrun, VERSION 5.1.1
Source code file: /home/source/gromacs-5.1.1/src/gromacs/domdec/domdec.cpp, line: 6987
Fatal error:
There is no domain decomposition for 20 ranks that is compatible with the given box and a minimum cell size of 4.99591 nm
Change the number of ranks or mdrun option -rdd or -dds
Look in the log file for details on the domain decomposition
For more information and tips for troubleshooting, please check the GROMACS
website at http://www.gromacs.org/Documentation/Errors
针对这个错误,我尝试了-dd手动分区,但在mixnpt6-2, mixnpt6-3中还是报错,自己看这些错误还是搞不明白这个分区该怎么分,还有minimum cell size为什么这么大,烦请各位老师指教,谢谢~~~
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6-1.png
(52.19 KB, 下载次数 Times of downloads: 81)
mix后24核跑NPT出错
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6-2.png
(36.96 KB, 下载次数 Times of downloads: 65)
mix后24核跑NPT并添加-dlb auto -dd 2 2 5 -npme 4
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6-3.png
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24核跑NPT并且设置-dlb auto -dd 2 2 6
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油水界面.docx
547.27 KB, 下载次数 Times of downloads: 57
油水界面图
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oil-water int.zip
2.56 MB, 下载次数 Times of downloads: 110
输入输出文件
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