Dear Chiara,

Prior to the QE-7.3.1 version, I always restarted phonon calculations without 
the “max_seconds” flag and the restart worked fine. Somehow in the latest 
version, there is an issue with restart files. It may be related to the use of 
D3.

Best,
Vahid

> On Nov 3, 2024, at 2:16 PM, Chiara Cignarella via users 
> <[email protected]> wrote:
> 
> CAUTION: The Sender of this email is not from within Dalhousie.
> 
> Dear Vahid,
> 
> As a suggestion, if you intend to restart a phonon calculation, you should 
> use the ‘max_seconds’ flag in the ph.x input, in order to make sure your 
> calculations stop cleanly before restarting. Without it, the restart will 
> work wrongly (if it works)
> 
> Best regards,
> 
> Chiara Cignarella
> 
> --------------------------
> Chiara Cignarella
> Post-doctoral fellow
> University of Bremen
> 
> 
>> On 3 Nov 2024, at 12:09, Paolo Giannozzi <[email protected]> wrote:
>> 
>> If your previous calculation just crashed, it is very unlikely that the 
>> restarted calculation will work. If instead it stopped cleanly: there are 
>> other reports of problems when restarting an incomplete phonon. 
>> Unfortunately it is close to impossible to figure out what goes wrong unless 
>> a sufficiently small reproducible case is found.
>> 
>> Paolo
>> 
>> On 02/11/2024 12:31, Vahid Askarpour wrote:
>>> Dear QE Community,
>>> Phonon calculations with QE-7.3.1 and the following inputs for scf.in and 
>>> ph.in ran fine until the phonon job stopped due to time limit allowed by 
>>> the system.
>>> Upon restart, the calculations began diverging as shown below:
>>> &CONTROL
>>>  calculation = 'scf'
>>>  etot_conv_thr =   1.0d-6
>>>  forc_conv_thr =   1.0d-5
>>>  outdir = './'
>>>  prefix = 'I2K'
>>>  pseudo_dir = './'
>>>  tprnfor = .true.
>>>  tstress = .true.
>>>  verbosity = 'high'
>>> /
>>> &SYSTEM
>>>  ecutwfc=   160
>>>  ecutrho =  700
>>>  ibrav = 0
>>>  nat = 6
>>>  ntyp = 2
>>>  occupations = 'smearing'
>>>  smearing = 'gauss'
>>>  degauss=0.02
>>>  lspinorb=.true.
>>>  noncolin=.true.
>>>  vdw_corr = 'dft-d3',
>>>  dftd3_version=4,
>>>  dftd3_threebody=.false.
>>> /
>>> &ELECTRONS
>>>  conv_thr =   1.0d-10
>>>  electron_maxstep = 500
>>>  mixing_mode='local-TF'
>>>  !mixing_beta=   0.3
>>> /
>>> ATOMIC_SPECIES
>>> K    39.098    K.rel-pbe-spn-kjpaw_psl.1.0.0.UPF
>>> I   126.90447 I.rel-pbe-n-kjpaw_psl.1.0.0.UPF
>>> CELL_PARAMETERS (angstrom)
>>>   4.583731831   0.000000000   0.000000000
>>>   0.000000000   9.157438007   0.000000000
>>>   0.000000000   0.000000000  30.000000000
>>> ATOMIC_POSITIONS (crystal)
>>> K                0.9997969746        0.7500016722        0.0831641299
>>> I                0.5000769219        0.5000083873        0.0279334092
>>> I                0.5001053393       -0.0000100595        0.1384074610
>>> K                0.0002030254        0.2500016722        0.0831641299
>>> I                0.4999230781        1.0000083873        0.0279334092
>>> I                0.4998946607        0.4999899405        0.1384074610
>>> K_POINTS (automatic)
>>> 10 6  1 0 0 0
>>> I2K
>>> &inputph
>>>  tr2_ph   =  1.0d-20
>>>  prefix   = 'I2K'
>>>  recover  = .true.
>>>  amass(1) =  39.098
>>>  amass(2) =  126.90447
>>>  ldisp=.true.
>>>  nq1=8, nq2=4, nq3=1
>>>  dftd3_hess='hess.dat'
>>>  start_q=14
>>>  last_q=14
>>>  outdir   = './'
>>>  alpha_mix(1) = 0.3
>>>  fildyn   = 'I2K.dyn'
>>>  fildvscf = 'dvscf'
>>> /
>>> The output is:
>>>    Representation     1      1 modes -  Done
>>>     Representation     2      1 modes -  Done
>>>     Representation     3      1 modes -  Done
>>>     Representation     4      1 modes -  Done
>>>     Representation     5      1 modes -  Done
>>>     Representation     6      1 modes -  Done
>>>     Representation     7      1 modes -  Done
>>>     Representation     8      1 modes -  Done
>>>     Representation     9      1 modes -  Done
>>>     Representation    10      1 modes -  Done
>>>     Representation    11      1 modes -  Done
>>>     Representation    12      1 modes -  Done
>>>     Representation    13      1 modes -  Done
>>>     Representation    14      1 modes -  Done
>>>     Representation    15      1 modes -  Done
>>>     Representation    16      1 modes -  Done
>>>     Representation    17      1 modes -  Done
>>>     Representation    18      1 modes -  To be done
>>>     Message from routine init_vloc:
>>>     Interpolation table for Vloc re-allocated
>>>     PHONON       :   8m54.89s CPU  10m 7.09s WALL
>>>     Representation #  18 mode #  18
>>>     Self-consistent Calculation
>>>      iter #  21 total cpu time :  1036.6 secs   av.it.:   8.9
>>>      thresh= 8.885E-11 alpha_mix =  0.300 |ddv_scf|^2 =  3.607E+04
>>>      iter #  22 total cpu time :  1326.3 secs   av.it.:  13.1
>>>      thresh= 1.000E-02 alpha_mix =  0.300 |ddv_scf|^2 =  3.315E+11
>>>      iter #  23 total cpu time :  1725.9 secs   av.it.:  22.3
>>>      thresh= 1.000E-02 alpha_mix =  0.300 |ddv_scf|^2 =  6.946E+17
>>>      iter #  24 total cpu time :  2309.8 secs   av.it.:  32.8
>>>      thresh= 1.000E-02 alpha_mix =  0.300 |ddv_scf|^2 =  4.610E+24
>>> Is this a bug or an error on my part?
>>> Thanks,
>>> Vahid
>>> Vahid Askarpour
>>> Department of Physics and Atmospheric Science
>>> Dalhousie University
>>> Halifax, NS, CANADA
>>> _______________________________________________
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>>> effects that the Russian military offensive has on their
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>> 
>> --
>> Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche,
>> Univ. Udine, via delle Scienze 206, 33100 Udine Italy, +39-0432-558216
>> 
>> _______________________________________________
>> The Quantum ESPRESSO community stands by the Ukrainian
>> people and expresses its concerns about the devastating
>> effects that the Russian military offensive has on their
>> country and on the free and peaceful scientific, cultural,
>> and economic cooperation amongst peoples
>> _______________________________________________
>> Quantum ESPRESSO is supported by MaX (www.max-centre.eu)
>> users mailing list [email protected]
>> https://lists.quantum-espresso.org/mailman/listinfo/users
> 
> _______________________________________________
> The Quantum ESPRESSO community stands by the Ukrainian
> people and expresses its concerns about the devastating
> effects that the Russian military offensive has on their
> country and on the free and peaceful scientific, cultural,
> and economic cooperation amongst peoples
> _______________________________________________
> Quantum ESPRESSO is supported by MaX (www.max-centre.eu)
> users mailing list [email protected]
> https://lists.quantum-espresso.org/mailman/listinfo/users

_______________________________________________
The Quantum ESPRESSO community stands by the Ukrainian
people and expresses its concerns about the devastating
effects that the Russian military offensive has on their
country and on the free and peaceful scientific, cultural,
and economic cooperation amongst peoples
_______________________________________________
Quantum ESPRESSO is supported by MaX (www.max-centre.eu)
users mailing list [email protected]
https://lists.quantum-espresso.org/mailman/listinfo/users

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