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<pre><font size="5"><b>Dear QE users,</b></font>
<font size="5"><b>I am trying to perform a phonon calculation on</b></font>
<font size="5"><b>a uniform grid of q-points for zinc blend </b></font>
<font size="5"><b>(consists on 8 atoms)structure.</b></font>
<font size="5"><b>First, I did the scf calculation for a </b></font>
<font size="5"><b>4x4x4 Monkhorst-Pack grid and tried to</b></font>
<font size="5"><b>calculate phonons on a uniform (4x4x4) </b></font>
<font size="5"><b>grid via ldisp true,but the program </b></font>
<font size="5"><b>phonon stopped with the error "end of </b></font>
<font size="5"><b>self consistent calculation. No convergence </b></font>
<font size="5"><b>has been achieved" in the representation 2 </b></font>
<font size="5"><b>(mode 2) and not create dyn3 file at </b></font>
<font size="5"><b>alpha_mix from 0.7. When I change </b></font>
<font size="5"><b>alpha_mix from 0.7 to 0.1 same problem </b></font>
<font size="5"><b>occurs at representation 2 (mode 2) and </b></font>
<font size="5"><b>dyn8 file not created.</b></font>
<font size="5"><b>Will any body help me.</b></font></pre>
<br><br>Muhammad Zafar<br>
PhD Scholar<br>
Department of Physics<br>
The Islamia University of Bahawalpur,Pakistan</td></tr></table>