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【求助】LAMMPS運行錯誤:Out of range atoms - cannot compute PPPM
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運行LAMMPS出現(xiàn)以下內(nèi)容: LAMMPS (23 Aug 2010) > Scanning data file ... > 4 = max bonds/atom > 6 = max angles/atom > Reading data file ... > orthogonal box = (-3.3562 -3.181 -3.2099) to (26.4202 26.9708 26.1994) > 1 by 1 by 1 processor grid > 1388 atoms > 960 bonds > 688 angles > Finding 1-2 1-3 1-4 neighbors ... > 4 = max # of 1-2 neighbors > 3 = max # of 1-3 neighbors > 3 = max # of 1-4 neighbors > 4 = max # of special neighbors > 1388 atoms in group all > 1128 atoms in group water > 260 atoms in group methane > Finding SHAKE clusters ... > 0 = # of size 2 clusters > 0 = # of size 3 clusters > 0 = # of size 4 clusters > 376 = # of frozen angles > PPPM initialization ... > G vector = 0.30131 > grid = 25 25 24 > stencil order = 5 > RMS precision = 7.38705e-06 > brick FFT buffer size/proc = 38148 15000 17340 > Setting up run ... > Memory usage per processor = 14.4062 Mbytes > Step Temp Press Volume TotEng > 0 356.69634 -nan 26404.024 6.5705214e+53 > ERROR: Out of range atoms - cannot compute PPPM 鏈接是data文件http://www.rayfile.com/files/3cd ... -8eca-0015c55db73d/ 和in文件 http://www.rayfile.com/files/4ef ... -bc0d-0015c55db73d/ 手冊上說是初始結(jié)構的問題導致了原子重疊。我做的是NPT模擬,請問有誰知道這個問題應該怎樣糾正?謝謝了,各位!! |
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榮譽版主 (職業(yè)作家)
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This error occus because atoms are moving too far 解決辦法:調(diào)小時間步長, 先運行一個 energy minimization 命令 一般運行一段時間之后,如果溫度比較高,再出現(xiàn)這樣的報錯信息,就是because atoms are moving too far 但是在第一步就出現(xiàn)這樣“Out of range atoms - cannot compute PPPM”,那么就是模型建立的有問題,檢查模型建立的過程,或者重新建模! |
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