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mydoing銅蟲(chóng) (初入文壇)
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[求助]
在MS里面dmol模塊用TDDFT計(jì)算紫外可見(jiàn)光譜的輸出結(jié)果問(wèn)題
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求助問(wèn)題1 :我用GGA BLYP計(jì)算500個(gè)躍遷,outmol中這一部分是什么意思。 +++ Entering Properties Section +++ Optical excitations Iteration: 1, roots left:500, convergence: 2.00E+00 at root: 1, time: 1430.3m Iteration: 2, roots left:493, convergence: 8.64E-03 at root: 496, time: 1548.8m Iteration: 3, roots left:378, convergence: 1.99E-02 at root: 500, time: 1660.1m Iteration: 4, roots left:217, convergence: 1.91E-03 at root: 500, time: 1770.7m Iteration: 5, roots left:169, convergence: 7.66E-04 at root: 500, time: 1881.3m Iteration: 6, roots left:134, convergence: 5.12E-04 at root: 497, time: 1992.0m Iteration: 7, roots left:148, convergence: 3.45E-04 at root: 495, time: 2102.7m …… 后面等convergence: 1.99E-02 小到E-06范圍內(nèi),迭代就會(huì)結(jié)束,然后輸出500個(gè)躍遷結(jié)果。 求助問(wèn)題2:其他參數(shù)一樣,泛函選用PBE +TS后的計(jì)算outmol,能勉強(qiáng)輸出500個(gè)躍遷,但是顯示任務(wù)失敗,outmol里有這些提示 …… Iteration: 47, roots left: 1, convergence: 1.72E-05 at root: 193, time: 6539.0m Iteration: 48, roots left: 1, convergence: 2.25E-05 at root: 182, time: 6649.8m Iteration: 49, roots left: 1, convergence: 1.05E-05 at root: 167, time: 6760.7m Iteration: 50, roots left: 1, convergence: 1.01E-05 at root: 166, time: 6871.5m Warning dvd 2048 500 540 808500 128873747500 3740 tentative result reached 以及 …… 424 -> 464 4.07 4.02 305. 308. 0.149508 0.001655 0.26 449 -> 475 4.08 4.02 304. 308. 0.149812 0.000233 0.18 Message: DMol3 job failed Error: DMol3 exiting Error: TDDFT not converged. See "Dv max de" above for error estimate. Error: TDDFT not converged. See "Dv max de" above for error 不知道上面這個(gè)Warning什么意思?我看help里面有以下這句話,可以用嗎?會(huì)不會(huì)結(jié)果和其他不一樣?When reaching TDDFT convergence is difficult, tightening the criteria of the basis coefficient thresholds can help. This means adding to the input file the following line: Tddft_crit 1.d-5 1.d-7 1.d-5 1.d-5 This will allow a more time consuming but more exact generation of the basis vector and will generally help with the overall TDDFT convergence process. 我接觸MS不太久,請(qǐng)各位大神幫幫忙啦。。。。。。 |
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