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[求助]
請(qǐng)教一下量化計(jì)算大約3000個(gè)原子的多肽體系 已有3人參與
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| 我要計(jì)算的多肽體系大約3000個(gè)原子, 包含C H O N S這五種原子。 因?yàn)轶w系太大,所以要使用oniom方法去計(jì)算。但是高層(high level)也有300個(gè)原子。原子太多,計(jì)算不動(dòng)啊。請(qǐng)教高手~~ |
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物化程序猿

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請(qǐng)使用Todd Martinez的程序 http://www.petachem.com/products.html 前提是你有GPU |
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物化程序猿

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That's so true. This's also the ultimate goal of many theoretical chemists, I believe. Actually, these methods have been developed for a long time. For example, Jiali Gao's X-Pol and Weitao Yang's divide-and-conquer methods were developed in the 1990s. Since you mentioned John Zhang, I know that John Zhang has done some work on NMR chemical shifts using fragmentation methods and I really admire his work. However, there're still far less people who are actually applying these sort of methods to solve real chemical problems than those who are still developing these methods. That might indicate that these methods haven't reached a very good balance between accuracy and efficiency, in my opinion. BTW, there's a recent special issue in Acc. Chem. Res. talking about large-scale QM methodologies, which is very interesting for us to read. I guess you're already aware of it. Cheers! |

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