[QE-users] unefficient parallelization of scf calculation

Thomas Brumme thomas.brumme at uni-leipzig.de
Wed Apr 10 12:18:51 CEST 2019


Dear Julien,

I can't give any valuable input for your question regarding the 
parallelization, but I think your
input is wrong. Using assume_isolated needs the system to be centered 
around z=0.

Regards

Thomas

On 4/10/19 11:36 AM, Julien Barbaud wrote:
>
> I am starting to use a hpc cluster of my university, but I am very 
> green on parallel computation.
>
> I have made a first test (test #1) on a very small-scale simulation 
> (relaxation of a GO sheet with 19 atoms, with respect to the gamma 
> point). The calculation took 3m20s to run on 1 proc on my personal 
> computer. On the cluster with 4 proc and default parallel options, it 
> took 1m5s, and on 8 proc it took 44s. This seems like a reasonable 
> behavior, and at least shows that raising the number of procs does 
> reduce computation time in this case (with obvious limitations if too 
> many procs for the job).
>
> However I tried with another test, a bit bigger (test #2). This 
> example is a scf calculation with 120 atoms (still with respect to the 
> gamma point). In this case, the parallelization brings absolutely no 
> improvement. In fact, although the /outfile/ confirms that the code is 
> running on N procs, it has similar performances as if it was running 
> on 1 proc (sometimes even worse actually, but probably not in a 
> significant manner, as the times are fluctuating a bit from 1 run to 
> another)
>
> I tried to run this same input file on my personal computer both on 1 
> and 2 cores. Turns out that it takes 10376s to run 10 iterations on 1 
> core, while it takes 6777s on two cores, so it seems that the 
> parallelization is doing ok on my computer.
>
> I have tried to run with different number of cores on the hpc, and 
> different parallelization options (like for instance –nb 4), but 
> nothing seems to improve the time
>
>
> Basically, I am stuck with those 2 seemingly conflicting facts:
>
>   * Parallelization seems to have no particular problem on the hpc
>     cluster because test #1 gives good results
>   * Parallelization seems to have no particular problem with the
>     particular input file #2 because it seems to scale reasonably with
>     proc number on my individual computer
>
> However, combining both and running this file in parallel on the hpc 
> cluster ends up not working correctly…
>
> I included below the input file and output file of test #2. I also 
> included as well as the slurm script that I use to submit the 
> calculation to the job manager, in case it helps (test2.scf.slurm.txt)
>
> Any suggestion on what is going wrong would be very welcome.
>
> Julien
>
>
> *----------------------------------**test2.in**---------------------------------------*
>
> *
> *
>
> &CONTROL
>   title = '# Quantum Espresso PWSCF output snapshot # 0'
>   pseudo_dir = '/lustre/home/acct-mseyxd/mseyxd/QE/qe-6.3/pseudo/' ,
>   prefix='bonding_scf'
>   calculation = 'scf'
>   outdir='./outslurm'
> /
>
> &SYSTEM
>   nat= 120
>   ntyp= 7
>   ibrav= 0
>   ecutwfc= 50, ecutrho=400,
>   occupations='smearing', smearing='mv', degauss=1.0d-3
>   assume_isolated='2D'
> /
>
> &ELECTRONS
>   mixing_beta = 0.5
>   conv_thr =  1.0d-7
>   electron_maxstep=1
> /
>
> &IONS
> /
>
> &CELL
> /
>
> ATOMIC_SPECIES
> C   12.011  C.pbesol-n-kjpaw_psl.1.0.0.UPF
> N   14.007  N.pbesol-n-kjpaw_psl.0.1.UPF
> H    1.008  H.pbesol-kjpaw_psl.0.1.UPF
> Pb  207.2   Pb.pbesol-dn-kjpaw_psl.1.0.0.UPF
> I   126.9   I.pbesol-n-kjpaw_psl.1.0.0.UPF
> O   15.999  O.pbesol-n-kjpaw_psl.1.0.0.UPF
> Cl  35.450  Cl.pbesol-n-kjpaw_psl.1.0.0.UPF
>
>
> CELL_PARAMETERS angstrom
>       6.40743642        0.00000000        0.00000000
>       0.00000000       12.53119000        0.00000000
>       0.00000000        0.00000000       39.01263233
>
>
> ATOMIC_POSITIONS angstrom
> C         3.20373698        3.26295456       22.67510117
> N         4.36830205        2.66824164       22.67510117
> N         2.03914607        2.66824164       22.67510117
> H         3.20373076        4.35970913       22.67510117
> H         5.20200492        3.26227865       22.67510117
> H         4.49794030        1.65118734       22.67510117
> H         1.90952027        1.65118734       22.67510117
> H         1.20545622        3.26227865       22.67510117
> Pb        6.40746106        6.04808537       19.50631617
> I         3.20373108        6.16571088       19.50631617
> I         6.40746051        2.89948619       19.50631617
> I         0.00000101        5.76270558       22.67510117
> C         3.20373698        9.52854956       22.67510117
> N         4.36830205        8.93383664       22.67510117
> N         2.03914607        8.93383664       22.67510117
> H         3.20373076       10.62530413       22.67510117
> H         5.20200492        9.52787365       22.67510117
> H         4.49794030        7.91678234       22.67510117
> H         1.90952027        7.91678234       22.67510117
> H         1.20545622        9.52787365       22.67510117
> Pb        6.40746106       12.31368037       19.50631617
> I         3.20373108       12.43130588       19.50631617
> I         6.40746051        9.16508119       19.50631617
> I         0.00000101       12.02830057       22.67510117
> C         3.20373698        3.26295456       29.01264528
> N         4.36830205        2.66824164       29.01264528
> N         2.03914607        2.66824164       29.01264528
> H         3.20373076        4.35970913       29.01264528
> H         5.20200492        3.26227865       29.01264528
> H         4.49794030        1.65118734       29.01264528
> H         1.90952027        1.65118734       29.01264528
> H         1.20545622        3.26227865       29.01264528
> Pb        6.40746106        6.04808537       25.84386028
> I         3.20373108        6.16571088       25.84386028
> I         6.40746051        2.89948619       25.84386028
> I         0.00000101        5.76270558       29.01264528
> C         3.20373698        9.52854956       29.01264528
> N         4.36830205        8.93383664       29.01264528
> N         2.03914607        8.93383664       29.01264528
> H         3.20373076       10.62530413       29.01264528
> H         5.20200492        9.52787365       29.01264528
> H         4.49794030        7.91678234       29.01264528
> H         1.90952027        7.91678234       29.01264528
> H         1.20545622        9.52787365       29.01264528
> Pb        6.40746106       12.31368037       25.84386028
> I         3.20373108       12.43130588       25.84386028
> I         6.40746051        9.16508119       25.84386028
> I         0.00000101       12.02830057       29.01264528
> C         3.20373698        3.26295456       35.35018939
> N         4.36830205        2.66824164       35.35018939
> N         2.03914607        2.66824164       35.35018939
> H         3.20373076        4.35970913       35.35018939
> H         5.20200492        3.26227865       35.35018939
> H         4.49794030        1.65118734       35.35018939
> H         1.90952027        1.65118734       35.35018939
> H         1.20545622        3.26227865       35.35018939
> Pb        6.40746106        6.04808537       32.18140439
> I         3.20373108        6.16571088       32.18140439
> I         6.40746051        2.89948619       32.18140439
> I         0.00000101        5.76270558       35.35018939
> C         3.20373698        9.52854956       35.35018939
> N         4.36830205        8.93383664       35.35018939
> N         2.03914607        8.93383664       35.35018939
> H         3.20373076       10.62530413       35.35018939
> H         5.20200492        9.52787365       35.35018939
> H         4.49794030        7.91678234       35.35018939
> H         1.90952027        7.91678234       35.35018939
> H         1.20545622        9.52787365       35.35018939
> Pb        6.40746106       12.31368037       32.18140439
> I         3.20373108       12.43130588       32.18140439
> I         6.40746051        9.16508119       32.18140439
> I         0.00000101       12.02830057       35.35018939
> C        -2.65922562        1.02746622       13.15267801
> C        -1.57082020        2.76789659       14.15213700
> C        -1.55249267        1.43382279       13.92545145
> C        -2.76678501        3.43396657       13.80880118
> C        -0.51572401        0.59007742       14.27042957
> C         0.45127539        2.57771266       15.36479250
> C         0.54032636        1.13871696       14.89500427
> C        -0.61858466        3.46111062       14.87552012
> C         1.75850840        0.45260751       14.42517077
> C         2.51877126        2.72823145       14.25997933
> C         2.54527275        1.46853929       13.80948684
> C         1.69149484        3.42061251       15.24764489
> C        -2.84434923        4.73311498       13.75015587
> C        -1.79251576        6.80155604       13.82062727
> C        -1.71556103        5.46156288       14.02089871
> C        -2.79591766        7.89012407       13.91075998
> C        -0.67171524        4.85078215       14.72657807
> C         0.42299842        7.09269756       14.52980725
> C         0.31418038        5.75006370       15.32008815
> C        -0.54822530        7.37927093       13.62065670
> C         1.58501883        4.93901110       15.15192558
> C         1.95672818        6.38683569       12.97082740
> C         2.39800998        5.48893963       14.08928384
> C         2.19010582        7.82391704       13.36789777
> C        -2.58931431        9.73216977       11.12323260
> C        -1.53736385       11.49261513       12.63531287
> C        -1.43991415       10.25590370       11.85590265
> C        -2.46212319       12.58463568       12.27360914
> C        -0.60003148        9.34961386       12.41523759
> C         0.61521796       10.90977347       13.68739727
> C         0.56702168        9.72454135       13.05961564
> C        -0.57311928       11.74387481       13.77090253
> C         1.73778864        8.96596466       12.44952664
> C         2.44039831       11.26999757       12.43362532
> C         2.66220529       10.00525725       12.01318349
> C         1.83430055       11.66382030       13.76046404
> Cl       -0.00001799        6.04797424       17.07363791
> Cl        1.25165378        8.40223027       10.76754187
> O        -1.79125675       11.13196776       14.04477237
> O         2.87346590       12.19705486       11.50562577
> O         2.66595523        5.77705032       15.51329335
> O         1.68196546        5.86106544       11.91469705
> O         2.44111071       11.89613785       15.06748010
> O         3.89019144        8.86144083       14.58391140
> O        -2.48663871        8.96018517       10.18744705
> O        -0.74483722        7.99628057       12.39035840
> O         1.51084248        7.88917390       14.66305294
> O         1.28942315        2.85893197       16.48674549
>
>
> K_POINTS gamma
>
>
>
> *-----------------------------------------------------test2.out--------------------------------------------*
>
> *
> *
>
>
>      Program PWSCF v.6.3 starts on 10Apr2019 at 15:35:34
>
>      This program is part of the open-source Quantum ESPRESSO suite
>      for quantum simulation of materials; please cite
>          "P. Giannozzi et al., J. Phys.:Condens. Matter 21 395502 (2009);
>          "P. Giannozzi et al., J. Phys.:Condens. Matter 29 465901 (2017);
>           URL http://www.quantum-espresso.org",
>      in publications or presentations arising from this work. More 
> details at
> http://www.quantum-espresso.org/quote
>
>      Parallel version (MPI), running on     8 processors
>
>      MPI processes distributed on     1 nodes
>      R & G space division:  proc/nbgrp/npool/nimage = 8
>      Reading input from 
> /lustre/home/acct-mseyxd/mseyxd/QE/GO-Cl/FAPBI3_bonding/scf/1x2x3_matching/bonding.scf.in
> Warning: card &IONS ignored
> Warning: card / ignored
> Warning: card &CELL ignored
> Warning: card / ignored
>
>      Current dimensions of program PWSCF are:
>      Max number of different atomic species (ntypx) = 10
>      Max number of k-points (npk) =  40000
>      Max angular momentum in pseudopotentials (lmaxx) =  3
>                file C.pbesol-n-kjpaw_psl.1.0.0.UPF: wavefunction(s)  
> 2S 2P renormalized
>                file N.pbesol-n-kjpaw_psl.0.1.UPF: wavefunction(s)  2P 
> renormalized
>                file H.pbesol-kjpaw_psl.0.1.UPF: wavefunction(s) 1S 
> renormalized
>                file Pb.pbesol-dn-kjpaw_psl.1.0.0.UPF: wavefunction(s)  
> 6S 6P 5D renormalized
>                file I.pbesol-n-kjpaw_psl.1.0.0.UPF: wavefunction(s)  
> 5S renormalized
>                file O.pbesol-n-kjpaw_psl.1.0.0.UPF: wavefunction(s)  
> 2S 2P renormalized
>                file Cl.pbesol-n-kjpaw_psl.1.0.0.UPF: wavefunction(s)  
> 3S 3P renormalized
>
>      gamma-point specific algorithms are used
>
>      Subspace diagonalization in iterative solution of the eigenvalue 
> problem:
>      a serial algorithm will be used
>
>
>      Parallelization info
>      --------------------
>      sticks:   dense  smooth     PW     G-vecs:    dense smooth      PW
>      Min        1140     570    141               356988 126222   15758
>      Max        1142     572    142               357012 126236   15798
>      Sum        9123    4565   1135              2856023 1009807  126259
>
>
>      Title:
>      # Quantum Espresso PWSCF output snapshot # 0
>
>
>      bravais-lattice index     =            0
>      lattice parameter (alat)  =      12.1083  a.u.
>      unit-cell volume          =   21138.7101 (a.u.)^3
>      number of atoms/cell      =          120
>      number of atomic types    =            7
>      number of electrons       =       542.00
>      number of Kohn-Sham states=          325
>      kinetic-energy cutoff     =      50.0000  Ry
>      charge density cutoff     =     400.0000  Ry
>      convergence threshold     =      1.0E-07
>      mixing beta               =       0.5000
>      number of iterations used =            8  plain     mixing
>      Exchange-correlation      = SLA PW PSX PSC ( 1  4 10  8 0 0)
>
>      celldm(1)=  12.108300  celldm(2)=   0.000000  celldm(3)= 0.000000
>      celldm(4)=   0.000000  celldm(5)=   0.000000  celldm(6)= 0.000000
>
>      crystal axes: (cart. coord. in units of alat)
>                a(1) = (   1.000000   0.000000   0.000000 )
>                a(2) = (   0.000000   1.955726   0.000000 )
>                a(3) = (   0.000000   0.000000   6.088649 )
>
>      reciprocal axes: (cart. coord. in units 2 pi/alat)
>                b(1) = (  1.000000  0.000000  0.000000 )
>                b(2) = (  0.000000  0.511319  0.000000 )
>                b(3) = (  0.000000  0.000000  0.164240 )
>
>
>      PseudoPot. # 1 for C  read from file:
> /lustre/home/acct-mseyxd/mseyxd/QE/qe-6.3/pseudo/C.pbesol-n-kjpaw_psl.1.0.0.UPF
>      MD5 check sum: f9b2fe17d1f478429498b05d17159f9e
>      Pseudo is Projector augmented-wave + core cor, Zval =  4.0
>      Generated using "atomic" code by A. Dal Corso v.6.3
>      Shape of augmentation charge: PSQ
>      Using radial grid of 1073 points,  4 beta functions with:
>                 l(1) =   0
>                 l(2) =   0
>                 l(3) =   1
>                 l(4) =   1
>      Q(r) pseudized with 0 coefficients
>
>
>      PseudoPot. # 2 for N  read from file:
> /lustre/home/acct-mseyxd/mseyxd/QE/qe-6.3/pseudo/N.pbesol-n-kjpaw_psl.0.1.UPF
>      MD5 check sum: 15bd223d5d75e9eda893d0f4e6bdad1b
>      Pseudo is Projector augmented-wave + core cor, Zval =  5.0
>      Generated using "atomic" code by A. Dal Corso v.6.3
>      Shape of augmentation charge: PSQ
>      Using radial grid of 1085 points,  4 beta functions with:
>                 l(1) =   0
>                 l(2) =   0
>                 l(3) =   1
>                 l(4) =   1
>      Q(r) pseudized with 0 coefficients
>
>
>      PseudoPot. # 3 for H  read from file:
> /lustre/home/acct-mseyxd/mseyxd/QE/qe-6.3/pseudo/H.pbesol-kjpaw_psl.0.1.UPF
>      MD5 check sum: 27a6b98f1514c59d399e798f1258b8b7
>      Pseudo is Projector augmented-wave, Zval =  1.0
>      Generated using "atomic" code by A. Dal Corso v.5.0.2 svn rev. 9415
>      Shape of augmentation charge: PSQ
>      Using radial grid of  929 points,  2 beta functions with:
>                 l(1) =   0
>                 l(2) =   0
>      Q(r) pseudized with 0 coefficients
>
>
>      PseudoPot. # 4 for Pb read from file:
> /lustre/home/acct-mseyxd/mseyxd/QE/qe-6.3/pseudo/Pb.pbesol-dn-kjpaw_psl.1.0.0.UPF
>      MD5 check sum: 56da3be0db09ba43f309b470f7bff7d1
>      Pseudo is Projector augmented-wave + core cor, Zval = 14.0
>      Generated using "atomic" code by A. Dal Corso v.6.3
>      Shape of augmentation charge: PSQ
>      Using radial grid of 1281 points,  6 beta functions with:
>                 l(1) =   0
>                 l(2) =   0
>                 l(3) =   1
>                 l(4) =   1
>                 l(5) =   2
>                 l(6) =   2
>      Q(r) pseudized with 0 coefficients
>
>
>      PseudoPot. # 5 for I  read from file:
> /lustre/home/acct-mseyxd/mseyxd/QE/qe-6.3/pseudo/I.pbesol-n-kjpaw_psl.1.0.0.UPF
>      MD5 check sum: 6038403ff9b03366b27f71806436e734
>      Pseudo is Projector augmented-wave + core cor, Zval =  7.0
>      Generated using "atomic" code by A. Dal Corso v.6.3
>      Shape of augmentation charge: PSQ
>      Using radial grid of 1247 points,  6 beta functions with:
>                 l(1) =   0
>                 l(2) =   0
>                 l(3) =   1
>                 l(4) =   1
>                 l(5) =   2
>                 l(6) =   2
>      Q(r) pseudized with 0 coefficients
>
>
>      PseudoPot. # 6 for O  read from file:
> /lustre/home/acct-mseyxd/mseyxd/QE/qe-6.3/pseudo/O.pbesol-n-kjpaw_psl.1.0.0.UPF
>      MD5 check sum: cb766521a97cf798d01896eaf7ac9a0a
>      Pseudo is Projector augmented-wave + core cor, Zval =  6.0
>      Generated using "atomic" code by A. Dal Corso v.6.3
>      Shape of augmentation charge: PSQ
>      Using radial grid of 1095 points,  4 beta functions with:
>                 l(1) =   0
>                 l(2) =   0
>                 l(3) =   1
>                 l(4) =   1
>      Q(r) pseudized with 0 coefficients
>
>
>      PseudoPot. # 7 for Cl read from file:
> /lustre/home/acct-mseyxd/mseyxd/QE/qe-6.3/pseudo/Cl.pbesol-n-kjpaw_psl.1.0.0.UPF
>      MD5 check sum: 939a64fc035742408689cdf8470f8314
>      Pseudo is Projector augmented-wave + core cor, Zval =  7.0
>      Generated using "atomic" code by A. Dal Corso v.6.3
>      Shape of augmentation charge: PSQ
>      Using radial grid of 1157 points,  6 beta functions with:
>                 l(1) =   0
>                 l(2) =   0
>                 l(3) =   1
>                 l(4) =   1
>                 l(5) =   2
>                 l(6) =   2
>      Q(r) pseudized with 0 coefficients
>
>
>      atomic species   valence    mass     pseudopotential
>         C              4.00    12.01100     C ( 1.00)
>         N              5.00    14.00700     N ( 1.00)
>         H              1.00     1.00800     H ( 1.00)
>         Pb            14.00   207.20000     Pb( 1.00)
>         I              7.00   126.90000     I ( 1.00)
>         O              6.00    15.99900     O ( 1.00)
>         Cl             7.00    35.45000     Cl( 1.00)
>
>      No symmetry found
>
>
>
>    Cartesian axes
>
>      site n.     atom                  positions (alat units)
>          1           C   tau(   1) = (   0.5000029   0.5092449 
> 3.5388726  )
>          2           N   tau(   2) = (   0.6817550   0.4164289 
> 3.5388726  )
>          3           N   tau(   3) = (   0.3182468   0.4164289 
> 3.5388726  )
>          4           H   tau(   4) = (   0.5000020   0.6804140 
> 3.5388726  )
>          5           H   tau(   5) = (   0.8118699   0.5091394 
> 3.5388726  )
>          6           H   tau(   6) = (   0.7019875   0.2576986 
> 3.5388726  )
>          7           H   tau(   7) = (   0.2980163   0.2576986 
> 3.5388726  )
>          8           H   tau(   8) = (   0.1881339   0.5091394 
> 3.5388726  )
>          9           Pb  tau(   9) = (   1.0000038   0.9439166 
> 3.0443246  )
>         10           I   tau(  10) = (   0.5000020   0.9622742 
> 3.0443246  )
>         11           I   tau(  11) = (   1.0000038   0.4525189 
> 3.0443246  )
>         12           I   tau(  12) = (   0.0000002   0.8993777 
> 3.5388726  )
>         13           C   tau(  13) = (   0.5000029   1.4871079 
> 3.5388726  )
>         14           N   tau(  14) = (   0.6817550   1.3942919 
> 3.5388726  )
>         15           N   tau(  15) = (   0.3182468   1.3942919 
> 3.5388726  )
>         16           H   tau(  16) = (   0.5000020   1.6582770 
> 3.5388726  )
>         17           H   tau(  17) = (   0.8118699   1.4870024 
> 3.5388726  )
>         18           H   tau(  18) = (   0.7019875   1.2355616 
> 3.5388726  )
>         19           H   tau(  19) = (   0.2980163   1.2355616 
> 3.5388726  )
>         20           H   tau(  20) = (   0.1881339   1.4870024 
> 3.5388726  )
>         21           Pb  tau(  21) = (   1.0000038   1.9217796 
> 3.0443246  )
>         22           I   tau(  22) = (   0.5000020   1.9401372 
> 3.0443246  )
>         23           I   tau(  23) = (   1.0000038   1.4303819 
> 3.0443246  )
>         24           I   tau(  24) = (   0.0000002   1.8772407 
> 3.5388726  )
>         25           C   tau(  25) = (   0.5000029   0.5092449 
> 4.5279646  )
>         26           N   tau(  26) = (   0.6817550   0.4164289 
> 4.5279646  )
>         27           N   tau(  27) = (   0.3182468   0.4164289 
> 4.5279646  )
>         28           H   tau(  28) = (   0.5000020   0.6804140 
> 4.5279646  )
>         29           H   tau(  29) = (   0.8118699   0.5091394 
> 4.5279646  )
>         30           H   tau(  30) = (   0.7019875   0.2576986 
> 4.5279646  )
>         31           H   tau(  31) = (   0.2980163   0.2576986 
> 4.5279646  )
>         32           H   tau(  32) = (   0.1881339   0.5091394 
> 4.5279646  )
>         33           Pb  tau(  33) = (   1.0000038   0.9439166 
> 4.0334166  )
>         34           I   tau(  34) = (   0.5000020   0.9622742 
> 4.0334166  )
>         35           I   tau(  35) = (   1.0000038   0.4525189 
> 4.0334166  )
>         36           I   tau(  36) = (   0.0000002   0.8993777 
> 4.5279646  )
>         37           C   tau(  37) = (   0.5000029   1.4871079 
> 4.5279646  )
>         38           N   tau(  38) = (   0.6817550   1.3942919 
> 4.5279646  )
>         39           N   tau(  39) = (   0.3182468   1.3942919 
> 4.5279646  )
>         40           H   tau(  40) = (   0.5000020   1.6582770 
> 4.5279646  )
>         41           H   tau(  41) = (   0.8118699   1.4870024 
> 4.5279646  )
>         42           H   tau(  42) = (   0.7019875   1.2355616 
> 4.5279646  )
>         43           H   tau(  43) = (   0.2980163   1.2355616 
> 4.5279646  )
>         44           H   tau(  44) = (   0.1881339   1.4870024 
> 4.5279646  )
>         45           Pb  tau(  45) = (   1.0000038   1.9217796 
> 4.0334166  )
>         46           I   tau(  46) = (   0.5000020   1.9401372 
> 4.0334166  )
>         47           I   tau(  47) = (   1.0000038   1.4303819 
> 4.0334166  )
>         48           I   tau(  48) = (   0.0000002   1.8772407 
> 4.5279646  )
>         49           C   tau(  49) = (   0.5000029   0.5092449 
> 5.5170566  )
>         50           N   tau(  50) = (   0.6817550   0.4164289 
> 5.5170566  )
>         51           N   tau(  51) = (   0.3182468   0.4164289 
> 5.5170566  )
>         52           H   tau(  52) = (   0.5000020   0.6804140 
> 5.5170566  )
>         53           H   tau(  53) = (   0.8118699   0.5091394 
> 5.5170566  )
>         54           H   tau(  54) = (   0.7019875   0.2576986 
> 5.5170566  )
>         55           H   tau(  55) = (   0.2980163   0.2576986 
> 5.5170566  )
>         56           H   tau(  56) = (   0.1881339   0.5091394 
> 5.5170566  )
>         57           Pb  tau(  57) = (   1.0000038   0.9439166 
> 5.0225086  )
>         58           I   tau(  58) = (   0.5000020   0.9622742 
> 5.0225086  )
>         59           I   tau(  59) = (   1.0000038   0.4525189 
> 5.0225086  )
>         60           I   tau(  60) = (   0.0000002   0.8993777 
> 5.5170566  )
>         61           C   tau(  61) = (   0.5000029   1.4871079 
> 5.5170566  )
>         62           N   tau(  62) = (   0.6817550   1.3942919 
> 5.5170566  )
>         63           N   tau(  63) = (   0.3182468   1.3942919 
> 5.5170566  )
>         64           H   tau(  64) = (   0.5000020   1.6582770 
> 5.5170566  )
>         65           H   tau(  65) = (   0.8118699   1.4870024 
> 5.5170566  )
>         66           H   tau(  66) = (   0.7019875   1.2355616 
> 5.5170566  )
>         67           H   tau(  67) = (   0.2980163   1.2355616 
> 5.5170566  )
>         68           H   tau(  68) = (   0.1881339   1.4870024 
> 5.5170566  )
>         69           Pb  tau(  69) = (   1.0000038   1.9217796 
> 5.0225086  )
>         70           I   tau(  70) = (   0.5000020   1.9401372 
> 5.0225086  )
>         71           I   tau(  71) = (   1.0000038   1.4303819 
> 5.0225086  )
>         72           I   tau(  72) = (   0.0000002   1.8772407 
> 5.5170566  )
>         73           C   tau(  73) = (  -0.4150218   0.1603553 
> 2.0527208  )
>         74           C   tau(  74) = (  -0.2451558   0.4319819 
> 2.2087050  )
>         75           C   tau(  75) = (  -0.2422954   0.2237748 
> 2.1733265  )
>         76           C   tau(  76) = (  -0.4318084   0.5359346 
> 2.1551211  )
>         77           C   tau(  77) = (  -0.0804884   0.0920926 
> 2.2271668  )
>         78           C   tau(  78) = (   0.0704299   0.4023002 
> 2.3979625  )
>         79           C   tau(  79) = (   0.0843280   0.1777180 
> 2.3246433  )
>         80           C   tau(  80) = (  -0.0965417   0.5401709 
> 2.3216025  )
>         81           C   tau(  81) = (   0.2744480   0.0706378 
> 2.2513170  )
>         82           C   tau(  82) = (   0.3931012   0.4257914 
> 2.2255358  )
>         83           C   tau(  83) = (   0.3972373   0.2291930 
> 2.1552281  )
>         84           C   tau(  84) = (   0.2639893   0.5338504 
> 2.3796795  )
>         85           C   tau(  85) = (  -0.4439138   0.7386909 
> 2.1459684  )
>         86           C   tau(  86) = (  -0.2797555   1.0615097 
> 2.1569667  )
>         87           C   tau(  87) = (  -0.2677453   0.8523788 
> 2.1882228  )
>         88           C   tau(  88) = (  -0.4363551   1.2314011 
> 2.1710336  )
>         89           C   tau(  89) = (  -0.1048337   0.7570551 
> 2.2983573  )
>         90           C   tau(  90) = (   0.0660168   1.1069478 
> 2.2676475  )
>         91           C   tau(  91) = (   0.0490337   0.8974047 
> 2.3909856  )
>         92           C   tau(  92) = (  -0.0855608   1.1516729 
> 2.1257576  )
>         93           C   tau(  93) = (   0.2473718   0.7708248 
> 2.3647407  )
>         94           C   tau(  94) = (   0.3053839   0.9967849 
> 2.0243396  )
>         95           C   tau(  95) = (   0.3742542   0.8566514 
> 2.1988956  )
>         96           C   tau(  96) = (   0.3418069   1.2210682 
> 2.0863099  )
>         97           C   tau(  97) = (  -0.4041108   1.5188867 
> 1.7359880  )
>         98           C   tau(  98) = (  -0.2399343   1.7936370 
> 1.9719763  )
>         99           C   tau(  99) = (  -0.2247255   1.6006251 
> 1.8503348  )
>        100           C   tau( 100) = (  -0.3842603   1.9640672 
> 1.9155257  )
>        101           C   tau( 101) = (  -0.0936461   1.4591817 
> 1.9376295  )
>        102           C   tau( 102) = (   0.0960162   1.7026737 
> 2.1361737  )
>        103           C   tau( 103) = (   0.0884943   1.5176961 
> 2.0381967  )
>        104           C   tau( 104) = (  -0.0894460   1.8328508 
> 2.1492063  )
>        105           C   tau( 105) = (   0.2712143   1.3993061 
> 1.9429809  )
>        106           C   tau( 106) = (   0.3808697   1.7588934 
> 1.9404992  )
>        107           C   tau( 107) = (   0.4154868   1.5615071 
> 1.8748814  )
>        108           C   tau( 108) = (   0.2862768   1.8203568 
> 2.1475771  )
>        109           Cl  tau( 109) = (  -0.0000028   0.9438992 
> 2.6646597  )
>        110           Cl  tau( 110) = (   0.1953439   1.3113248 
> 1.6804758  )
>        111           O   tau( 111) = (  -0.2795590   1.7373513 
> 2.1919488  )
>        112           O   tau( 112) = (   0.4484580   1.9035780 
> 1.7956676  )
>        113           O   tau( 113) = (   0.4160721   0.9016165 
> 2.4211389  )
>        114           O   tau( 114) = (   0.2625021   0.9147286 
> 1.8595108  )
>        115           O   tau( 115) = (   0.3809809   1.8566143 
> 2.3515614  )
>        116           O   tau( 116) = (   0.6071370   1.3829932 
> 2.2760915  )
>        117           O   tau( 117) = (  -0.3880864   1.3984041 
> 1.5899412  )
>        118           O   tau( 118) = (  -0.1162457   1.2479688 
> 1.9337466  )
>        119           O   tau( 119) = (   0.2357952   1.2312528 
> 2.2884430  )
>        120           O   tau( 120) = (   0.2012385   0.4461897 
> 2.5730642  )
>
>      number of k points=     1  Marzari-Vanderbilt smearing, width 
> (Ry)=  0.0010
>                        cart. coord. in units 2pi/alat
>         k(    1) = (   0.0000000   0.0000000   0.0000000), wk =   
> 2.0000000
>
>      Dense  grid:  1428012 G-vectors     FFT dimensions: (  80, 160, 480)
>
>      Smooth grid:   504904 G-vectors     FFT dimensions: (  60, 108, 360)
>
>      Estimated max dynamical RAM per process >     965.66 MB
>
>      Estimated total dynamical RAM >       7.54 GB
>  ----2D----2D----2D----2D----2D----2D----2D----2D----2D----2D----2D----2D
>   The code is running with the 2D cutoff
>   Please refer to:
>   Sohier, T., Calandra, M., & Mauri, F. (2017),
>   Density functional perturbation theory for gated two-dimensional 
> heterostructures:
>   Theoretical developments and application to flexural phonons in 
> graphene.
>   Physical Review B, 96(7), 75448. 
> https://doi.org/10.1103/PhysRevB.96.075448
>  ----2D----2D----2D----2D----2D----2D----2D----2D----2D----2D----2D----2D
>
>      Check: negative/imaginary core charge=   -0.000002 0.000000
>
>      Initial potential from superposition of free atoms
>      Check: negative starting charge=   -0.001132
>
>      starting charge  541.98383, renormalised to  542.00000
>
>      negative rho (up, down):  1.132E-03 0.000E+00
>      Starting wfcs are  420 randomized atomic wfcs
>      Checking if some PAW data can be deallocated...
>
>      total cpu time spent up to now is      125.6 secs
>
>      Self-consistent Calculation
>
>      iteration #  1     ecut=    50.00 Ry     beta= 0.50
>      Davidson diagonalization with overlap
>      c_bands:  3 eigenvalues not converged
>      ethr =  1.00E-02,  avg # of iterations = 40.0
>
>      negative rho (up, down):  1.031E-05 0.000E+00
>
>      total cpu time spent up to now is     2094.5 secs
>
>      total energy              =   82142.85683667 Ry
>      Harris-Foulkes estimate   =  -53335.51769720 Ry
>      estimated scf accuracy    <  111068.31785845 Ry
>
>      End of self-consistent calculation
>
>      convergence NOT achieved after   1 iterations: stopping
>
>      Writing output data file bonding_scf.save/
>
>      init_run     :    119.18s CPU    120.33s WALL (       1 calls)
>      electrons    :   1961.71s CPU   1969.12s WALL (       1 calls)
>
>      Called by init_run:
>      wfcinit      :     52.26s CPU     52.44s WALL (       1 calls)
>      potinit      :     19.26s CPU     19.33s WALL (       1 calls)
>      hinit0       :     36.63s CPU     36.68s WALL (       1 calls)
>
>      Called by electrons:
>      c_bands      :   1919.78s CPU   1923.97s WALL (       1 calls)
>      sum_band     :     28.22s CPU     30.08s WALL (       1 calls)
>      v_of_rho     :      2.26s CPU      2.35s WALL (       2 calls)
>      newd         :     20.58s CPU     22.50s WALL (       2 calls)
>      PAW_pot      :      4.00s CPU      4.00s WALL (       2 calls)
>      mix_rho      :      0.23s CPU      0.24s WALL (       1 calls)
>
>      Called by c_bands:
>      init_us_2    :      0.22s CPU      0.27s WALL (       3 calls)
>      regterg      :   1919.41s CPU   1923.60s WALL (       2 calls)
>
>      Called by sum_band:
>      sum_band:bec :      0.00s CPU      0.00s WALL (       1 calls)
>      addusdens    :     16.57s CPU     17.94s WALL (       1 calls)
>
>      Called by *egterg:
>      h_psi        :    680.38s CPU    682.69s WALL (      43 calls)
>      s_psi        :    259.57s CPU    259.75s WALL (      43 calls)
>      g_psi        :      0.93s CPU      0.94s WALL (      40 calls)
>      rdiaghg      :     52.76s CPU     52.86s WALL (      41 calls)
>
>      Called by h_psi:
>      h_psi:pot    :    679.62s CPU    681.90s WALL (      43 calls)
>      h_psi:calbec :    255.27s CPU    255.54s WALL (      43 calls)
>      vloc_psi     :    164.42s CPU    166.01s WALL (      43 calls)
>      add_vuspsi   :    259.93s CPU    260.35s WALL (      43 calls)
>
>      General routines
>      calbec       :    263.20s CPU    263.88s WALL (      44 calls)
>      fft          :      2.33s CPU      2.43s WALL (      23 calls)
>      ffts         :      0.09s CPU      0.09s WALL (       3 calls)
>      fftw         :    128.50s CPU    130.07s WALL (   10237 calls)
>      interpolate  :      0.25s CPU      0.26s WALL (       2 calls)
>      davcio       :      0.00s CPU      0.10s WALL (       3 calls)
>
>      Parallel routines
>      fft_scatt_xy :     23.50s CPU     23.55s WALL (   10263 calls)
>      fft_scatt_yz :     10.98s CPU     12.22s WALL (   10263 calls)
>
>      PWSCF        : 34m45.53s CPU    34m55.12s WALL
>
>
>    This run was terminated on:  16:10:30  10Apr2019
>
> =------------------------------------------------------------------------------=
>    JOB DONE.
> =------------------------------------------------------------------------------=
>
>
>
>
>
>
> *-----------------------------------------------------SLURM 
> command-------------------------------------*
>
> *
> *
>
> #!/bin/bash
>
> #SBATCH --job-name=QE_GO-Cl_bonding_scf
> #SBATCH --partition=cpu
> #SBATCH --mail-type=end
> #SBATCH --mail-user=julien_barbaud at sjtu.edu.cn
> #SBATCH --output=bonding.scf.slurm.out
> #SBATCH --error=bonding.scf.slurm.err
> #SBATCH -p cpu
> #SBATCH -n 8
> #SBATCH --ntasks-per-node=8
>
> ulimit -l unlimited
> ulimit -s unlimited
>
> INPUT=$HOME/QE/GO-Cl/FAPBI3_bonding/scf/1x2x3_matching/bonding.scf.in
> EXEC=$HOME/QE/qe-6.3/bin/pw.x
>
> srun --mpi=pmi2 $EXEC -in $INPUT
>
>
> _______________________________________________
> users mailing list
> users at lists.quantum-espresso.org
> https://lists.quantum-espresso.org/mailman/listinfo/users

-- 
Dr. rer. nat. Thomas Brumme
Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry
Leipzig University
Phillipp-Rosenthal-Strasse 31
04103 Leipzig

Tel:  +49 (0)341 97 36456

email: thomas.brumme at uni-leipzig.de

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