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老师们好,目前我需要计算cohp,现在我已经叫超算工程师安装了lobster-5.1.1.zip,图片里是我解压之后得到的文件,然后下一步我不知道该怎么提交任务。我的大问题就是怎么提交cohp任务,小问题1.之前提交作业的脚本是否需要更改,我看有一些博主使用了sub_lobster.sh的脚本,如果是,请问怎么更改。2.lobsterin的开始能量和结束能量该从哪看,此文件是否需要保存至算例的路径里面,基组的顺序是否要与POSCAR文件的顺序对应,如CHO,HOC,OCH。3.cohp的计算是非自洽计算还是自洽计算,如果是自洽计算,那么是否可以和ELF,BADER,EDD一起计算,如果是非自洽计算,是否可以和DOS一起计算,因为cohp需要加入NBANDS这个参数,但是我目前好像没看到有使用在自洽计算里面的,个人认为应该是算完能量之后再进行非自洽计算(不知道对不对)。4.NBANDS的取值,我在结构优化中的OUTCAR里面直接搜索NBANDS,得到如图所示的NBANDS,然后再取其1.5倍就是NBANDS的取值,不知道NBANDS的读取方法有无错误。5.注意到LWAVE是打开状态,那么如果是非自洽计算,是否需要ISTAT=1读取波函数,ICHARGE=11读取CHGCAR,LORBIT=11。
我目前的脚本如下
#!/bin/bash
#SBATCH -p v6_384
#SBATCH -N 1
#SBATCH -n 64
source /public1/soft/modules/module.sh
module load mpi/oneAPI/2022.1
export PATH=/publicfs01/fs1-t/home/t0s000841/software-t0s000841/bin-630:$PATH
mpirun -np 64 vasp_std
自洽计算INCAR
DFT-D3 Correction
IVDW = 12 (DFT-D3 method of method with no damping)
Global Parameters
ISTART = 0 (Read existing wavefunction, if there)
ISPIN = 1 (Non-Spin polarised DFT)
# ICHARG = 11 (Non-self-consistent: GGA/LDA band structures)
LREAL = Auto (Projection operators: automatic)
ENCUT = 450 (Cut-off energy for plane wave basis set, in eV)
LWAVE = T (Write WAVECAR or not)
LCHARG = T (Write CHGCAR or not)
LASPH = .TRUE. (Give more accurate total energies and band structure calculations)
PREC = Accurate (Accurate strictly avoids any aliasing or wrap around errors)
# LVTOT = .TRUE. (Write total electrostatic potential into LOCPOT or not)
# LVHAR = .TRUE. (Write ionic + Hartree electrostatic potential into LOCPOT or not)
# NELECT = (No. of electrons: charged cells, be careful)
# LPLANE = .TRUE. (Real space distribution, supercells)
# NWRITE = 2 (Medium-level output)
# KPAR = 2 (Divides k-grid into separate groups)
# NGXF = 240 (FFT grid mesh density for nice charge/potential plots)
# NGYF = 280 (FFT grid mesh density for nice charge/potential plots)
# NGZF = 540 (FFT grid mesh density for nice charge/potential plots)
Electronic Relaxation
ISMEAR = 0 (Gaussian smearing, metals:1)
SIGMA = 0.1 (Smearing value in eV, metals:0.2)
NELM = 90 (Max electronic SCF steps)
NELMIN = 6 (Min electronic SCF steps)
EDIFF = 1E-05 (SCF energy convergence, in eV)
# GGA = PS (PBEsol exchange-correlation)
NCORE = 8
Ionic Relaxation
NSW = 0 (Max ionic steps)
IBRION = -1 (Algorithm: 0-MD, 1-Quasi-New, 2-CG)
ISIF = 2 (Stress/relaxation: 2-Ions, 3-Shape/Ions/V, 4-Shape/Ions)
EDIFFG = -5E-02 (Ionic convergence, eV/AA)
ISYM = 0 (Symmetry: 0=none, 2=GGA, 3=hybrids)
# NELM = 200
LAECHG = T (bader charge)
LELF = T (ELF)
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