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wangjiang12

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[求助] vasp中设置了PREC = ACCURATE还有必要设置ADDGRID = True吗 已有1人参与

各位高手好,

请问vasp中设置了PREC = ACCURATE还有必要设置ADDGRID = True吗?
说明书上说PREC=Accurate increases the memory requirements somewhat, but it should be used if very accurate forces (phonons and second derivatives) are required. The accuracy of forces can be further improved by specifying ADDGRID = .TRUE. (see Sec. 6.63).
它的意思是不是说为准确计算力,如果没有设置PREC=Accurate,可以加上ADDGRID = .TRUE.,但是如果设置了,就不用了呢?

非常感谢
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mywai520

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【答案】应助回帖

感谢参与,应助指数 +1
设置PREC=Accurate就没有必要设置ADDGRID = True。

但是若是你没有设置PREC=Accurate,又想对力要求高可以设置ADDGRID = True。
2楼2014-05-01 16:17:00
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