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老和山猥瑣派九段
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【求助成功】為什么total drift沒(méi)有達(dá)到EDIFFG的要求,卻說(shuō)reached required accuracy? 已有8人參與
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EDIFFG=-0.001,呵呵,比較猛吧. OUTCAR后面報(bào)告"reached required accuracy-stoping structural energy minimisation". 但是TOTAL-FORCE和total drift都沒(méi)有達(dá)到EDIFFG的要求.PREC=Accurate,關(guān)閉實(shí)空間后,每個(gè)原子每個(gè)方向上的力和total drift還是沒(méi)有達(dá)到要求,計(jì)算就退出來(lái)了,運(yùn)行離子步小于NSW. 這是什么原因呢?編譯錯(cuò)了嗎? POSITION TOTAL-FORCE (eV/Angst) ----------------------------------------------------------------------------------- 2.20903 0.00000 6.13890 0.000000 0.000000 0.055890 0.00000 0.00000 0.00000 0.000000 0.000000 0.401501 1.10452 1.91308 3.08095 0.000000 0.000000 -0.139539 2.20903 0.00000 1.56202 0.000000 0.000000 0.013240 0.00000 0.00000 4.65030 0.000000 0.000000 0.044110 1.10452 1.91308 7.62370 0.000000 0.000000 0.036490 5.52258 -1.91308 6.13890 0.000000 0.000000 0.055890 3.31355 -1.91308 0.00000 0.000000 0.000000 0.401501 4.41806 0.00000 3.08095 0.000000 0.000000 -0.139539 5.52258 -1.91308 1.56202 0.000000 0.000000 0.013240 3.31355 -1.91308 4.65030 0.000000 0.000000 0.044110 4.41806 0.00000 7.62370 0.000000 0.000000 0.036490 2.20903 3.82615 6.13890 0.000000 0.000000 0.055890 0.00000 3.82615 0.00000 0.000000 0.000000 0.401501 1.10452 5.73923 3.08095 0.000000 0.000000 -0.139539 2.20903 3.82615 1.56202 0.000000 0.000000 0.013240 0.00000 3.82615 4.65030 0.000000 0.000000 0.044110 1.10452 5.73923 7.62370 0.000000 0.000000 0.036490 5.52258 1.91308 6.13890 0.000000 0.000000 0.055890 3.31355 1.91308 0.00000 0.000000 0.000000 0.401501 4.41806 3.82615 3.08095 0.000000 0.000000 -0.139539 5.52258 1.91308 1.56202 0.000000 0.000000 0.013240 3.31355 1.91308 4.65030 0.000000 0.000000 0.044110 4.41806 3.82615 7.62370 0.000000 0.000000 0.036490 0.00000 0.00000 6.92021 0.000000 0.000000 -0.138665 2.20903 0.00000 3.86577 0.000000 0.000000 -0.147815 1.10452 1.91308 0.78101 0.000000 0.000000 -0.125211 3.31355 -1.91308 6.92021 0.000000 0.000000 -0.138665 5.52258 -1.91308 3.86577 0.000000 0.000000 -0.147815 4.41806 0.00000 0.78101 0.000000 0.000000 -0.125211 0.00000 3.82615 6.92021 0.000000 0.000000 -0.138665 2.20903 3.82615 3.86577 0.000000 0.000000 -0.147815 1.10452 5.73923 0.78101 0.000000 0.000000 -0.125211 3.31355 1.91308 6.92021 0.000000 0.000000 -0.138665 5.52258 1.91308 3.86577 0.000000 0.000000 -0.147815 4.41806 3.82615 0.78101 0.000000 0.000000 -0.125211 ----------------------------------------------------------------------------------- total drift: 0.000296 -0.000609 -0.021872 INCAR: ENCUT = 400 EDIFF = 1E-4 EDIFFG = -0.001 IBRION = 2 ISMEAR = 0 SIGMA = 0.05 NSW = 10 ALGO = Fast #LREAR = Auto POTIM = 0.2 呵呵,經(jīng)過(guò)一段時(shí)間觀察發(fā)現(xiàn):EDIFFG<0是對(duì)自由原子(T T T)受力來(lái)做判斷的,對(duì)固定原子(F F F)不做為判斷依據(jù).只要自由原子達(dá)到力的收斂標(biāo)準(zhǔn)就可以了. [ Last edited by cenwanglai on 2010-5-21 at 13:37 ] |
木蟲(chóng) (小有名氣)
金蟲(chóng) (小有名氣)
金蟲(chóng) (小有名氣)
鐵桿木蟲(chóng) (正式寫(xiě)手)
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