Hi,<div><br></div><div>Whenever I run a "restart" relaxation of ions, it always terminated after one bfgs iteration, and tells me,</div><div><br></div><div><div> The maximum number of steps has been reached.</div>
<div> End of BFGS Geometry Optimization</div><div> Begin final coordinates</div></div><div> ...</div><div><br></div><div>Even I set nstep = 1000 and electron_maxstep = 1000</div><div><br></div><div>So, I have to copy all coordinates into a new input to run it "from_scratch", then it will run normally, terminate after a lot of iterations.</div>
<div><br></div><div>Anything wrong with my input file? </div><div>A compilation error? Or it just means that the convergence has been reached?</div><div><br></div><div>Regards,</div><div>Xijun Wang</div><div><br></div><div>
<br></div><div>The input file:</div><div>*****************</div><div><br></div><div><div>&CONTROL</div><div> calculation = 'relax',</div><div> restart_mode = 'restart',</div><div> prefix = 'trip',</div>
<div> outdir = './'</div><div> pseudo_dir = '/RQusagers/wangxiju/espresso/pseudo'</div><div> etot_conv_thr = 1.0E-6</div><div> forc_conv_thr = 1.0D-5</div><div> tstress = .true. ,</div>
<div> tprnfor = .true. ,</div><div> nstep <span class="Apple-tab-span" style="white-space:pre">        </span>= 1000 ,</div><div> dt = 150</div><div> /</div><div>&SYSTEM</div><div> ibrav = 0, celldm(1) = 19.964957</div>
<div> nat = 64, ntyp = 2, ecutwfc = 25, ecutrho = 300</div><div> occupations = 'smearing', smearing = 'cold', degauss = 0.03D0</div><div> nspin = 2, tot_magnetization = 2</div><div> nbnd = 340</div><div>
/</div><div>&ELECTRONS</div><div> diagonalization = 'cg', electron_maxstep = 1000, conv_thr = 1.D-6</div><div> mixing_mode = 'plain', mixing_beta = 0.1D0, mixing_ndim = 16</div><div> /</div><div>&IONS</div>
<div> ion_dynamics = 'bfgs', upscale = 100.D0 </div><div>/</div><div>CELL_PARAMETERS hexagonal</div><div> 0.992781869 0.000000000 -0.001946740</div><div> 0.000000000 0.588596312 0.000000000</div><div> -0.254396859 0.000000000 1.117512248</div>
<div>ATOMIC_SPECIES</div><div> Zr 91.22400 Zr.pbe-nsp-van.UPF</div><div> N 14.00674 N.pbe-van_bm.UPF</div><div>ATOMIC_POSITIONS angstrom</div><div> N<span class="Apple-tab-span" style="white-space:pre">        </span>6.239044778<span class="Apple-tab-span" style="white-space:pre">        </span>1.554381787<span class="Apple-tab-span" style="white-space:pre">        </span>1.967061325</div>
<div> N<span class="Apple-tab-span" style="white-space:pre">        </span>1.558801609<span class="Apple-tab-span" style="white-space:pre">        </span>1.554381786<span class="Apple-tab-span" style="white-space:pre">        </span>9.815800854</div>
<div>......</div><div><br></div>-- <br>Dept. of Chem and Biochem, Concordia University<br>7141 Sherbrooke Ouest, Montreal, QC, Canada (H4B 1R6)<br>Tel: 514-848-2424-#5835 (Lab) TA office: SP175.23<br><br>
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