optimize autotest document based on #891

doc/autotest/property/properties/EOS-get-started-and-input-examples.md

@@ -24,4 +24,4 @@ Equation of State (EOS) here calculates the energies of the most stable structur
 }
 ```
 
-`vol_start` is the starting volume per atom in Å^3/atom, `vol_step` is the increasing step of volume, and the biggest volume is smaller than `vol_end`. In the above example, 40 tasks would be generated as `task.000000` to `task.000020` with from 0.9 to 1.1 times the volume of equilibrium structure (Å^3/atom as the unit), respectively.
+`vol_start` is the starting relative volume per atom in Å^3/atom, `vol_step` is the increasing step of the ratio of relative volume, and the biggest volume is smaller than `vol_end` times the volume of equilibrium structure.

doc/autotest/property/properties/EOS-make.md

@@ -14,99 +14,4 @@ scale = (vol_current / vol_equi) ** (1. / 3.)
 
 `vol_current` is the corresponding volume per atom of the current task and `vol_equi` is the volume per atom of the equilibrium configuration. Then the `poscar_scale` function in `dpgen.auto_test.lib.vasp` module would help to generate `POSCAR` file with `vol_current` in `confs/mp-*/eos_00/task.[0-9]*[0-9]`.
 
-**Step 5.** According to the task type, the input file including `INCAR`, `POTCAR` or `conf.lmp`, `in.lammps` would be written in every `confs/mp-*/eos_00/task.[0-9]*[0-9]`. 
-
-For EOS calculations by VASP, if `change_box` is `True`, `ISIF` in VASP would be 4, else `ISIF` would be 2. The default value of `change_box` is `True`. For further information of the use of `ISIF` in VASP, we refer users to [ISIF command](https://www.vasp.at/wiki/index.php/ISIF).
-
-For EOS calculations by LAMMPS, when `change_box` is `True`, an example of `in.lammps` for AlMg is given as below and the `scale` parameter in line 5 is calculated by the equation above.
-
-```txt
-clear
-variable        GPa2bar	equal 1e4
-variable        B0	equal 70
-variable        bp	equal 0
-variable	xx	equal scale
-variable        yeta	equal 1.5*(${bp}-1)
-variable        Px0	equal 3*${B0}*(1-${xx})/${xx}^2*exp(${yeta}*(1-${xx}))
-variable        Px	equal ${Px0}*${GPa2bar}
-units           metal
-dimension       3
-boundary	p p p
-atom_style	atomic
-box             tilt large
-read_data       conf.lmp
-mass            1 1
-mass            2 1
-neigh_modify    every 1 delay 0 check no
-pair_style      deepmd frozen_model.pb
-pair_coeff
-compute         mype all pe
-thermo          100
-thermo_style    custom step pe pxx pyy pzz pxy pxz pyz lx ly lz vol c_mype
-dump            1 all custom 100 dump.relax id type xs ys zs fx fy fz
-min_style       cg
-fix             1 all box/relax iso ${Px}
-minimize        0 1.000000e-10 5000 500000
-fix             1 all box/relax aniso ${Px}
-minimize        0 1.000000e-10 5000 500000
-variable        N equal count(all)
-variable        V equal vol
-variable        E equal "c_mype"
-variable        Pxx equal pxx
-variable        Pyy equal pyy
-variable        Pzz equal pzz
-variable        Pxy equal pxy
-variable        Pxz equal pxz
-variable        Pyz equal pyz
-variable        Epa equal ${E}/${N}
-variable        Vpa equal ${V}/${N}
-print "All done"
-print "Total number of atoms  = ${N}"
-print "Relax at Press         = ${Px} Bar"
-print "Final energy per atoms = ${Epa} eV"
-print "Final volume per atoms = ${Vpa} A^3"
-print "Final Stress (xx yy zz xy xz yz) = ${Pxx} ${Pyy} ${Pzz} ${Pxy} ${Pxz} ${Pyz}"
-```
-
-when `change_box` is `False`, an example of `in.lammps` for AlMg is given as:
-```txt
-clear
-units 	metal
-dimension	3
-boundary	p	p    p
-atom_style	atomic
-box         tilt large
-read_data   conf.lmp
-mass            1 1
-mass            2 1
-neigh_modify    every 1 delay 0 check no
-pair_style deepmd frozen_model.pb
-pair_coeff
-compute         mype all pe
-thermo          100
-thermo_style    custom step pe pxx pyy pzz pxy pxz pyz lx ly lz vol c_mype
-dump            1 all custom 100 dump.relax id type xs ys zs fx fy fz
-min_style       cg
-minimize        0 1.000000e-10 5000 500000
-variable        N equal count(all)
-variable        V equal vol
-variable        E equal "c_mype"
-variable        tmplx equal lx
-variable        tmply equal ly
-variable        Pxx equal pxx
-variable        Pyy equal pyy
-variable        Pzz equal pzz
-variable        Pxy equal pxy
-variable        Pxz equal pxz
-variable        Pyz equal pyz
-variable        Epa equal ${E}/${N}
-variable        Vpa equal ${V}/${N}
-variable        AA equal (${tmplx}*${tmply})
-print "All done"
-print "Total number of atoms = ${N}"
-print "Final energy per atoms = ${Epa}"
-print "Final volume per atoms = ${Vpa}"
-print "Final Base area = ${AA}"
-print "Final Stress (xx yy zz xy xz yz) = ${Pxx} ${Pyy} ${Pzz} ${Pxy} ${Pxz} ${Pyz}"
-```
-
+**Step 5.** According to the task type, the input file including `INCAR`, `POTCAR` or `conf.lmp`, `in.lammps` would be written in every `confs/mp-*/eos_00/task.[0-9]*[0-9]`.