<div dir="ltr"><font color="#000000">Dear Prof.  Paolo Giannozzi</font><br><div class="gmail_extra"><br>My sincere apologies for the incomplete details about my issue. I am using PWSCF version 5.0 compiled with intel fortran 12.1.6 version, gfortran 4.7.2 and mpich 3.0.2 environment. </div>

<div class="gmail_extra"><br></div><div class="gmail_extra">When I am trying to do band structure calculation according to webpage <span style="font-family:arial,sans-serif;font-size:13px"> </span><i style="font-family:arial,sans-serif;font-size:13px"><a href="http://people.sissa.it/~degironc/QE-Tutorial/examples_pwscf_ex.tgz" target="_blank">http://people.sissa.it/~degironc/QE-Tutorial/examples_pwscf_ex.tgz</a> </i><span style="font-family:arial,sans-serif;font-size:13px">I am getting the following error for silicon case.</span></div>

<div class="gmail_extra"><div style="font-size:13px;font-family:arial,sans-serif"><br></div><div style="font-size:13px;font-family:arial,sans-serif"><i>Program received signal SIGSEGV: Segmentation fault - invalid memory reference.</i></div>

<div style="font-size:13px;font-family:arial,sans-serif"><i><br></i></div><div style="font-size:13px;font-family:arial,sans-serif"><i>Backtrace for this error:</i></div><div style="font-size:13px;font-family:arial,sans-serif">

<i>#0  0x2B8949244F27</i></div><div style="font-size:13px;font-family:arial,sans-serif"><i>#1  0x2B89492454F4</i></div><div style="font-size:13px;font-family:arial,sans-serif"><i>#2  0x3D036302CF</i></div>
<div style="font-size:13px;font-family:arial,sans-serif"><i>#3  0x2B894A53B270</i></div><div style="font-size:13px;font-family:arial,sans-serif"><i>#4  0x2B894825748C</i></div><div style="font-size:13px;font-family:arial,sans-serif">

<i>#5  0x2B89473DC47D</i></div><div style="font-size:13px;font-family:arial,sans-serif"><i>#6  0x411782 in cgracsc_ at cgracsc.f90:67</i></div><div style="font-size:13px;font-family:arial,sans-serif">
<i>#7  0x4084D8 in punch_band_ at bands.f90:331</i></div><div style="font-size:13px;font-family:arial,sans-serif"><i>#8  0x40951E in do_bands at bands.f90:112</i></div><div style="font-size:13px;font-family:arial,sans-serif">

<i><br></i></div><div style="font-size:13px;font-family:arial,sans-serif"><i>[1]+  Segmentation fault      ../bin/bands.x < <a href="http://bands.in/" target="_blank">bands.in</a> > bands.out</i></div>
<div style="font-size:13px;font-family:arial,sans-serif"><br></div><div style="font-size:13px;font-family:arial,sans-serif">Moreover nothing is written in bands.out and bands.dat files. I hope with this information I will get solution for the above error.</div>
<div style="font-size:13px;font-family:arial,sans-serif">
<br></div><div style="font-size:13px;font-family:arial,sans-serif"><br></div></div><div class="gmail_extra"><font face="arial, sans-serif"><br></font><div class="gmail_quote">On Wed, Apr 3, 2013 at 6:49 PM, Paolo Giannozzi <span dir="ltr"><<a href="mailto:paolo.giannozzi@uniud.it" target="_blank">paolo.giannozzi@uniud.it</a>></span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div>On Wed, 2013-04-03 at 11:22 +0530, Krishna chaitanya wrote:<br>


<br>
> Please suggest me how to solve this problem.<br>
<br>
</div>please see page <a href="http://www.quantum-espresso.org/?page_id=26" target="_blank">http://www.quantum-espresso.org/?page_id=26</a><br>
section "Reporting Bugs". There is no way anybody can suggest<br>
anything without a clear explanation of which exact operations<br>
have been done, on which version of the code, etc. etc.<br>
<span><font color="#888888"><br>
P.<br>
<br>
--<br>
 Paolo Giannozzi, Dept. Chemistry&Physics&Environment,<br>
 Univ. Udine, via delle Scienze 208, 33100 Udine, Italy<br>
 Phone +39-0432-558216, fax +39-0432-558222<br>
<br>
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</font></span></blockquote></div><br><br clear="all"><div><br></div>-- <br>With Best Regards<br><br>Dr. G. Krishna Chaitanya<br>Assistant Professor<br>School of Chemical Sciences<br>SRTM University<br>Nanded-431 606<br>India.<br>


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