<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Dear Paolo Giannaozzi<br>I am calculating phonon calculation for ZnS using 8 atoms. But it take a long time nearly 7 days to compleet calculation. I have dual core 1.866 GHz laptop with 2 Gb RAM. Am I putting some wrong parameter due to which this calculation is too slow. For 2 atoms calculation it take 6 to 7 hours.<br><br>Muhammad Zafar<br>
PhD Scholar<br>
Department of Physics<br>
The Islamia University of Bahawalpur,Pakistan</td></tr></table>