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mazuju028木蟲 (正式寫手)
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[交流]
BRMIX: very serious problems the old and the new charge density differ 已有1人參與
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BRMIX: very serious problems the old and the new charge density differ 解決方案匯總(google,baidu的前10個搜索結(jié)果中提煉出來的),方便查閱,逐個排查出錯原因: 1,ISYM=0; Set ISYM = 0 explicitly in the INCAR file. (I had ADDGRID added as well). Helped me with VASP 4.6 and VASP 5.2.2 2, 1) 增大PREC。please have a look whether the grid for the Broyden mixing is lage enough (WARNING: grid for Broyden might be to small in OUTCAR). If so, increase PREC and check if the error persists 2) 增大K點。in case you use a tetrahedron method for BZ integration your k-mesh should be large enough to fill the (I)BZ with tetrahedra completely 3,降低優(yōu)化選項 1) The problem disappears after reducing optimization level from -O4 to -O3. 2) The parallel version only works if I reduce optimization flag to -O1 at which point the serial version is faster anyways. 4,在K點中加入Gamma點 We found that there's an error in the way VASP calculates k-points when using the Monkhorst-pack scheme and that the problem would be fixed if we used Gamma centered instead. 5,修改編譯器 用ifort10就會出現(xiàn)這個問題,改用ifort9或者最新的ifort11都可以解決這個問題。 歡迎補充。 [ Last edited by mazuju028 on 2011-12-6 at 21:28 ] |
soft study |

金蟲 (小有名氣)
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