>Dear all,<br>>I have a problem in calculation force constant with q2r.x.<br>>Here are my input files of pw.x ph.x q2r.x. I am so sad. Please tell me the reasons >Thank you so much.<br>+++++++++++++++++++++++++++++++scf.in<br>&CONTROL<br>   calculation =   'scf' ,<br>   restart_mode = 'from_scratch' ,<br>   outdir='/home/user/ecnuphyk/SUN/tmp/tmp-p1/' ,<br>   pseudo_dir = '/home/user/ecnuphyk/SUN/pseudo/' ,<br>   prefix='alh3' ,<br>   tstress = .true. ,<br>   tprnfor = .true. ,<br>               etot_conv_thr = 1.0E-5  ,<br>               forc_conv_thr = 1.0D-4 ,<br> /<br> &SYSTEM<br>   ibrav = 0 ,<br>   celldm(1) = 1.889725988578923203102406997093  
 ,<br>                         nat  =  16 ,<br>                        ntyp  =  2 ,<br>                       nspin  =  1<br>                     ecutwfc  =  44.0982 ,<br> /<br> &ELECTRONS<br>                    conv_thr  =  1.0d-7  ,<br>                  mixing_beta = 0.7
 ,<br> /<br>CELL_PARAMETERS (alat)<br>...<br>ATOMIC_SPECIES<br>...<br>ATOMIC_POSITIONS {crystal}<br>...<br>K_POINTS automatic<br>  4 4 3 0 0  0<br>++++++++++++++++++++++++++++ph.in<br>&inputph<br>  tr2_ph=1.0d-12,<br>  prefix='alh3',<br>  ldisp=.true.,<br>  nq1=4, nq2=4, nq3=3<br>  epsil=.true. ,<br>  amass(1)=26.98,<br>  amass(2)=1.0,<br>  outdir= '/home/user/ecnuphyk/SUN/tmp/tmp-p1/' ,<br>  fildyn='alh3.dyn',<br> /<br>+++++++++++++++++++++++++++++q2r.in<br> &input<br>   fildyn='alh3.dyn', zasr='simple', flfrc='alh3444.fc'<br> /<br style="background-color: rgb(255, 0, 0);"><span style="background-color: rgb(255, 0, 0);">++++++++++++++++++++++++++++q2r.in.out   (The error )<br>  reading grid info from file alh3.dyn0<br>  reading force constants from file alh3.dyn1<br> macroscopic fields =  T<br>   4.51585   0.00000 
 -0.08800<br>   0.00000   4.37104   0.00000<br>  -0.08800   0.00000   4.43104<br>  na=             1<br>   2.74722  -0.27565  -0.08418<br>   0.24590   2.66281   0.41340<br>  -0.11507  -0.40383   2.71996<br>  na=             2<br>   2.74722   0.27565  -0.08418<br>  -0.32097   2.64842  -0.40555<br>  -0.11506   0.40383   2.71996<br>  na=             3<br>   2.74722  -0.27565  -0.08418<br>   0.24590   2.66281   0.41340<br>  -0.11507  -0.40383   2.71996<br> 
 na=             4<br>   2.74722   0.27565  -0.08418<br>  -0.32097   2.64842  -0.40555<br>  -0.11507   0.40383   2.71996<br>  na=             5<br>  -0.62424   0.00001   0.05784<br>  -0.00008  -0.63566  -0.00071<br>   0.06224  -0.00088  -1.42838<br>  na=             6<br>  -1.06619  -0.39916   0.01343<br>  -0.40231  -0.99561   0.02342<br>   0.01086   0.02141  -0.62960<br>  na=             7<br>  -1.06619   0.39915   0.01342<br>   0.40230  -0.99561  -0.02341<br>   0.01086 
 -0.02142  -0.62960<br>  na=             8<br>  -0.62424  -0.00002   0.05784<br>   0.00007  -0.63566   0.00072<br>   0.06224   0.00091  -1.42838<br>  na=             9<br>  -1.06613   0.39958   0.01388<br>   0.40245  -0.99702  -0.02390<br>   0.01136  -0.02197  -0.62981<br>  na=            10<br>  -1.06613  -0.39958   0.01389<br>  -0.40245  -0.99702   0.02391<br>   0.01136   0.02197  -0.62981<br>  na=            11<br>  -0.62425   0.00002   0.05784<br>  -0.00007  -0.63567 
 -0.00072<br>   0.06224  -0.00091  -1.42827<br>  na=            12<br>  -1.06613   0.39959   0.01389<br>   0.40248  -0.99704  -0.02391<br>   0.01135  -0.02197  -0.62985<br>  na=            13<br>  -1.06613  -0.39959   0.01388<br>  -0.40247  -0.99704   0.02390<br>   0.01136   0.02198  -0.62985<br>  na=            14<br>  -1.06619  -0.39916   0.01342<br>  -0.40233  -0.99564   0.02341<br>   0.01085   0.02143  -0.62963<br>  na=            15<br>  -1.06619   0.39916   0.01343<br>   0.40233 
 -0.99563  -0.02342<br>   0.01085  -0.02142  -0.62963<br>  na=            16<br>  -0.62425  -0.00001   0.05784<br>   0.00008  -0.63567   0.00071<br>   0.06223   0.00088  -1.42827<br>  nqs=             1<br> q=   0.00000000  0.00000000  0.00000000<br>  reading force constants from file alh3.dyn2<br>  nqs=             2<br> q=   0.00095372  0.00000000  0.05148507<br>   1   1   1<br><br><span style="background-color: rgb(185, 185, 185);"> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><br style="background-color: rgb(185, 185, 185);"><span style="background-color:
 rgb(185, 185, 185);">     from init : error #         1</span><br style="background-color: rgb(185, 185, 185);"><span style="background-color: rgb(185, 185, 185);">      nc already filled: wrong q grid or wrong nr</span><br style="background-color: rgb(185, 185, 185);"><span style="background-color: rgb(185, 185, 185);"> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><br style="background-color: rgb(185, 185, 185);"><br style="background-color: rgb(185, 185, 185);"><span style="background-color: rgb(185, 185, 185);">     stopping ...</span><br><br style="background-color: rgb(255, 0, 0);"></span>>************************************************************************<br><BR><BR><p>



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