<div dir="ltr"><div>Hi<br><br></div>Whenever I try to run some problem some examples gives the error shown below, i have tried with increased ecutrho and ecutwfc suggested by one of this forum member and i also saw some old same question but i didn't get desired answer, i also tried by some linux command like ulimit -u etc, but didn't get solution can anyone suggest pakka solution,<br>
<br>
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<p class="" style="margin-bottom:0cm">/home/metal/Desktop/QE/espresso-4.3.2/examples/example02
: starting</p>
<p class="" style="margin-bottom:0cm"><br>
</p>
<p class="" style="margin-bottom:0cm">This example shows how
to use pw.x and ph.x to calculate phonon</p>
<p class="" style="margin-bottom:0cm"><br>
</p>
<p class="" style="margin-bottom:0cm">frequencies at Gamma
and X for Si and C in the diamond structure and</p>
<p class="" style="margin-bottom:0cm"><br>
</p>
<p class="" style="margin-bottom:0cm">for fcc-Ni.</p>
<p class="" style="margin-bottom:0cm"><br></p><p class="" style="margin-bottom:0cm"><br></p><p class="" style="margin-bottom:0cm"> executables
directory: /home/metal/Desktop/QE/espresso-4.3.2/bin</p>
<p class="" style="margin-bottom:0cm"><br>
</p>
<p class="" style="margin-bottom:0cm"> pseudo directory:
/home/metal/Desktop/QE/espresso-4.3.2/pseudo</p>
<p class="" style="margin-bottom:0cm"><br>
</p>
<p class="" style="margin-bottom:0cm"> temporary directory:
/home/metal/tmp</p>
<p class="" style="margin-bottom:0cm"><br>
</p>
<p class="" style="margin-bottom:0cm">checking that needed
directories and files exist... done
</p><p class="" style="margin-bottom:0cm"><br>
</p>running pw.x as:
/home/metal/Desktop/QE/espresso-4.3.2/bin/pw.x
<p class="" style="margin-bottom:0cm"><br>
</p>
<p class="" style="margin-bottom:0cm"> running ph.x as:
/home/metal/Desktop/QE/espresso-4.3.2/bin/ph.x
</p>
<p class="" style="margin-bottom:0cm"><br>
</p>cleaning
/home/metal/tmp... done
<p class="" style="margin-bottom:0cm"><br>
</p>
<p class="" style="margin-bottom:0cm"> running the scf
calculation for Si...</p>
<p class="" style="margin-bottom:0cm"><br>
</p>
<p class="" style="margin-bottom:0cm">Program received signal
SIGSEGV: Segmentation fault - invalid memory reference.</p>
<p class="" style="margin-bottom:0cm"><br>
</p>Backtrace for this
error:
<p class="" style="margin-bottom:0cm"><br>
</p>#0 0xB6B91C8B
<p class="" style="margin-bottom:0cm">#1 0xB6B922DC
</p><p class="" style="margin-bottom:0cm">#2 0xB77CB3FF
</p><p class="" style="margin-bottom:0cm">#3 0xB6DC9106
</p><p class="" style="margin-bottom:0cm">#4 0xB6C96A3B</p><p class="" style="margin-bottom:0cm">#5 0xB6C9984B
</p><p class="" style="margin-bottom:0cm">#6 0xB6C99DB2
</p><p class="" style="margin-bottom:0cm">#7 0xB6C9984B
</p><p class="" style="margin-bottom:0cm">#8 0xB6D3BE45
</p><p class="" style="margin-bottom:0cm">#9 0x81D14F8 in
__fft_scalar_MOD_cfft3d at fft_scalar.f90:1353
</p><p class="" style="margin-bottom:0cm">#10 0x81CEE8F in
invfft_x_ at fft_interfaces.f90:154
</p><p class="" style="margin-bottom:0cm">#11 0x8101105 in
atomic_rho_ at atomic_rho.f90:150
</p><p class="" style="margin-bottom:0cm">#12 0x809258F in
potinit_ at potinit.f90:123
</p><p class="" style="margin-bottom:0cm">#13 0x8060145 in
init_run_ at init_run.f90:99
</p><p class="" style="margin-bottom:0cm">#14 0x804AE54 in pwscf
at pwscf.f90:139
</p><p class="" style="margin-bottom:0cm">Segmentation fault
(core dumped)
</p><p class="" style="margin-bottom:0cm">Error condition
encountered during test: exit status = 139
</p><p class="" style="margin-bottom:0cm"><br>
</p>Aborting
<p class="" style="margin-bottom:0cm"><br></p><p class="" style="margin-bottom:0cm">
Thanks in advance<br></p>
<div><div><br><br clear="all"><div><div><div><div>Anik shrivastava</div>
<div>Senior Research Fellow </div>
<div>Naval Materials Research Lab,DRDO</div>
<div>Mumbai-400085</div>
<div>India</div></div>
</div></div></div></div></div>