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[交流]
【求助】優(yōu)化如何用ISART=3 full restart?
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大家好!請教一個問題。我在手冊上看到 ISART=3 'full restart including orbitals and charge prediction' Same as ISTART=2 but in addition a valid file TMPCAR must exist containing the positions and orbitals at time steps and , which are needed for the orbtial and charge prediction scheme (used for MD-runs). ISTART=3 is generally not recommended unless an operating system imposes serious restriction on the CPU time per job: If you continue with ISTART=1 or 2, a relatively large number of electronic iterations might be necessary to reach convergence of the orbitals in the second and third MD-steps. ISTART=3 therefore saves time and is important if a MD-run is split into very small pieces (NSW10). Nevertheless, we have found that it is safer to restart the orbital prediction after 100 to 200 steps. If NSW$" src="http://cms.mpi.univie.ac.at/vasp/vasp/img29.png" width=20 align=middle border=0>30 ISTART=1 or 2 is strongly recommended. Mind: If ISTART=3, a non-existing WAVECAR or TMPCAR file or any inconsistency of input data will immediately stop execution. 因為我在服務器上做優(yōu)化任務,但是只能算3天,3天后,job自動被殺掉,我還要重新提交。我知道可以復制CONTCAR到POSCAR然后繼續(xù)任務,但是這樣能量計算的第一步的時間很長。我看手冊上說可以使用TMPCAR來進行完全的restart,但是不清楚如何得到TMPCAR。請問有沒有有經驗的朋友使用過TMPCAR和ISTART=3來重新啟動作業(yè)的? |
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